7 Solutions to Fix Error Code 963 on Google Play Of Motorola Edge 40 Pro | Dr.fone

7 Solutions to Fix Error Code 963 on Google Play Of Motorola Edge 40 Pro | Dr.fone

Ariadne Lv13

7 Solutions to Fix Error Code 963 on Google Play Of Motorola Edge 40 Pro

People are increasingly complaining about Google Play Error Codes which pop-up during downloading, installing or updating an App via Google Play Store. Amongst these, the most recent and common one being Error Code 963.

Google Play Error 963 is a typical error which shows up not only when you try to download and install an App but also during App update.

Error 963 cannot be attributed to a particular App or its update. It is a Google Play Store error and is experienced by Android users across the world.

Error Code 963, just like any other Google Play Store errors, is not something difficult to deal with. It’s a minor glitch which can be fixed easily. There is no need to worry or panic if you see Error 963 on Google Play Store preventing your favorite App from downloading or updating.

Read on to find out more about the Google Play Error 963 and best ways to fix it.

Part 1: What is Error Code 963?

Error 963 is a common Google Play Store error which basically hinders Apps from downloading and updating. Many people get worried when Error Code 963 does not let them install new Apps or update existing ones. However, please understand that Google Play Error is not such a big deal as it may sound and can be overcome easily.

Error 963 pop-up message reads as follows: “cannot be downloaded due to an error (963)” as shown in the image below.

cannot download app

A similar message shows up even while you are trying to update an App, as shown in the screenshot below.

can't update app

Error Code 963 is basically an outcome of data crash which mostly is seen in cheaper smartphones. There might another reason for Error 963 preventing Apps from downloading and updating, which is Google Play Store Cache being corrupted. People also speculate SD Card related issues as many-a-times external memory enhancer chips do not support large Apps and their updates. Also, Error 963 is very common with HTC M8 and HTC M9 smartphones.

All these reasons and more can handle with ease and you can continue to use Google play services smoothly. In the following segment, we will discuss various fixes to cure the problem to enable to you download, install and update Apps on your device normally.

Part 2: Easiest solution to fix Error Code 963 on Android

When it comes to the most convenient solution to fix error 963, Dr.Fone - System Repair (Android) cannot be missed. It is the most productive program that covers a wide range of Android issues. It ensures full safety while performing and one can fix the Android issues in a hassle-free way.

Dr.Fone - System Repair (Android)

One click to fix Google Play error 963

  • The tool is recommended for its higher success rate.
  • Not just Google Play error 963, it can fix a large number of system issues including app crashing, black/white screen etc.
  • It’s considered as the first tool that offers one-click operation for Android repairing.
  • There’s no technical expertise needed to use this tool.

4,997,014 people have downloaded it

This section will provide you the tutorial guide for how to fix error code 963.

Note: Before moving to solve the error 963, we would like to inform you that the process may result in wiping away your data. And therefore, we suggest you to make backup of your Motorola Edge 40 Pro prior to fixing this Google Play error 963.

Phase 1: Connecting and preparing the Motorola Edge 40 Pro device

Step 1 – To begin fixing error 963, run Dr.Fone after downloading and installing it on your PC. Now, pick out the ‘System Repair’ tab from the main screen. Thereupon, with the help of a USB cable, make connection between your Motorola Edge 40 Pro and PC

fix google play error 963 using repair tool

Step 2 – On the left panel, you’re supposed to choose ‘Android Repair’ and then click the ‘Start’ button.

select the android repair option

Step 3 – On the following screen, you need to choose the appropriate details for your device like the name, brand, model, country/region etc. Later, go for warning confirmation and hit ‘Next’.

device references selected

Phase 2: Taking Android device in Download mode for repairing

Step 1 – It is essential to get your Motorola Edge 40 Pro or tablet entered in Download mode. For this, following are the steps to be taken:

If the Motorola Edge 40 Pro device contains Home button:

  • Turn the Motorola Edge 40 Pro device off and then keep holding the ‘Power’, ‘Volume Down’ and ‘Home’ buttons altogether for about 10 seconds. Next, release them all and push the ‘Volume Up’ key. This way, your device will enter the Download mode.

fix google play error 963 on android with home key

If the Motorola Edge 40 Pro device contains no Home button:

  • Switch off your phone/tablet and press the ‘Volume Down’, ‘Bixby’ and ‘Power’ buttons for 10 seconds. Leave the buttons and then press the ‘Volume Up’ button for entering download mode.

fix google play error 963 on android without home key

Step 2 – Press the ‘Next’ button and then the program will commence the firmware downloading.

firmware downloaded

Step 3 – Upon successful downloading and verification of the firmware, the process of Android device repairing will begin automatically.

start the fixing process

Step 4 – Within a while, the Google play error 963 will be vanished.

make the fix google play error 963 disappear on android

Part 3: 6 Common Solutions to fix Error Code 963

fix Error Code 963

Since there is no specific reason for Error Code 963 to occur, similarly there is no one solution to the problem. You may use any one of them below or try them all to never see Error Code 963 on your device.

1. Clear Play Store Cache and Play Store Data

Clearing Google Play Store Cache and Data basically means keeping Google Play Store clean and free from trouble-making data stored in respect of it. It is advisable to carry out this process regularly to prevent Errors like Error Code 963 from occurring.

Follow the steps given below to fix  Error Code 963:

Visit “Settings” and select “Application Manager”.

Application Manager

Now select “All” to see all downloaded and built-in Apps on your device.

Select “Google Play Store” and from the options that appear, tap on “Clear Cache” and “Clear Data”.

Clear Data

Once you are done clearing Google Play Store Cache and Data, try to download, install or update the App facing Google Play Error 963 again.

2. Uninstall updates for Play Store

Uninstalling Google Play Store updates is an easy and quick task. This method is known to have helped many as it brings back the Play Store to its original state, free from all updates.

Visit “Settings” and select “Application Manager”.

select “Application Manager”

Now select “Google Play Store” from “All” Apps.

select “Google Play Store”

In this step, click on “Uninstall Updates” as shown below.

Uninstall Updates

3. Shift the App from SD Card to device’s memory

This method is strictly for certain Apps which cannot be updated because they are stored on an external memory card, i.e., SD Card. Such memory enhancing chips do not support large Apps and due to a shortage of space prevents them from updating. It advisable to move such Apps from the SD Card to the Motorola Edge 40 Pro device’s internal memory and then try to update it.

Visit “Settings” and select “Apps”.

select “Apps”

From “All” Apps click on the App which is unable to update.

Now click on “Move to Phone” or “Move to internal storage” and try to download its update again from the Google Play Store.

“Move to internal storage”

Try updating the App now. If the Apps’s update does not download even now, DO NOT worry. There are three more ways to help you.

4. Unmount your external Memory Card

Error Code963 may also occur due to an external memory chip used in your device to enhance its storage capacity. This is very common and can be dealt with by unmounting the SD Card temporarily.

To unmount your SD Card:

Visit “Settings” and keep scrolling downwards.

Now select “Storage”.

From the options that appear, select “Unmount SD Card” as explained in the screenshot below.

select “Unmount SD Card”

Note: If the App or its update downloads successfully now, do not forget to mount the SD Card back.

5. Remove and Re-add your Google account

Deleting and re-adding your Google account in might sound a little tedious but it does not take much of your precious time. Moreover, this technique is very effective when it comes to fixing Error  Code 963.

Carefully follow the steps given below to remove and then re-add your Google account:

Visit “Settings”, under “Accounts” select “Google”.

Select your account and from the “Menu” select “Remove account” as shown below.

select “Remove account”

Once your account is removed, follow the steps given hereunder to add it back again after a few minutes:

Go back to “Accounts” and select “Add Account”.

select “Add Account”

Select “Google” as shown above.

In this step feed in your account details and your Google account will be configured once again.

6. Special technique for HTC users

This technique is specially crafted fro HTC smartphone users who frequently face Google Play Error 963.

Follow the step-by-step instructions given below to uninstall all updates for your HTC One M8 Lock Screen App:

Visit “Settings” and find “HTC Lock Screen” under “Apps”.

Now click on “Force Stop”.

In this step, Click on “Uninstall Updates”.

This remedy is as simple as it sounds and has helped many HTC users to get rid of Error 963.

Google Play Errors are a very common phenomenon these days, especially Error Code 963 which usually occurs in the Google Play Store when we try to download, install or update an App. There is no need to worry if you see Error Code 963 pop-up on your screen as your device and its software are not to be blamed for Error 963 to suddenly surface. It is a random error and can be fixed easily by you. You do not need any technical assistance to deal with the issue. All you need to do is follow the steps introduced in this article to use Google Play Store and its services smoothly.

How to Exit Android Factory Mode On Motorola Edge 40 Pro?

You’ve often heard that recovery mode will solve just about any problem your Motorola Edge 40 Pro is experiencing. This is mostly true and one of the components of Android’s recovery mode, factory mode or factory reset is one of the most efficient ways to solve various problems on your device. While factory mode is often a good thing, there are times when your device can enter factory mode on its own. Other times, you can safely enter factory mode but not know how to get out.

Fortunately for you, this article will explain all aspects of factory mode and especially how to safely exit factory mode.

Part 1. What is Android Factory Mode?

Factory mode or what is commonly known as factory reset is one of the options available for you when your Motorola Edge 40 Pro is in recovery mode. Several options are available for you once you enter Recovery mode on your device but few are as effective as the wipe data/ factory reset option. This option is useful in solving a whole host of problems that your device could be experiencing.

If you have been using your Motorola Edge 40 Pro for a while now and its performance to be less than ideal, a factory reset might be a good solution. That is however not the only problem a factory reset or factory mode can solve. It will also work for a number or Android errors that you may experience, problems caused by faulty firmware updates and also tweaks made on your device that may not have worked as expected.

It is however important to note that a factory reset or factory mode does often result in the loss of all your data. Therefore a backup is necessary to protect against this data loss risk.

Part 2. Backup your Android Device First

Before we can see how to safely enter and exit factory mode, it is important to have a full backup of your device. We mentioned that a factory mode will likely erase all the data on your device. A backup will ensure that you can get your phone back to its original state before the factory mode.

In order to do a full and complete backup of your device you need to have a tool that will not only ensure that you backup everything on your device but one that makes it easy for you to accomplish this. One of the best tools in the market is Dr.Fone - Backup & Resotre (Android) . This software is designed to enable you to create a full backup of your device.

Dr.Fone - Backup & Restore (Android)

Flexibly Backup and Restore Android Data

  • Selectively backup Android data to computer with one click.
  • Preview and restore backup to any Android devices.
  • Supports 8000+ Android devices.
  • There is no data lost during backup, export or restore.

3,428,803 people have downloaded it

Follow these very simple steps to use this MobileTrans Phone Transfer software to create a full backup of your device.

Step 1. Launch Dr.Fone on your computer and choose “Backup & Restore”

Run the software on your computer and you can see all features displayed in the primary window. Choose this one: Backup & Restore. It allows you to get your device backed up entirely with one click.

backup android before enter in recovery mode

Step 2. Plug in with your device

Then plug in with your device to the computer. When your devic is detected, click on Backup.

connect android phone to computer

Step 3. Select the file types to backup

The program will display all the file types it can support to backup. Just select the ones you would like to backup and hit Backup.

select the data types to backup

Step 4. Start backing up your device to the computer

After choosing the file’s type for backup, click “Backup” to begin backing up your device to your computer. It will take you a few minutes, depending on the storage of the data.

android factory mode

Note: You can use the feature of “Restore From Backup” to restore the backup file to your device, when you have the need later.

Part 3: One Click Solution to fix Android stuck in factory mode

From the above parts, you are well aware about what is factory mode. As we discussed, this mode fixes most troubles with Android devices.

But for situations when your Motorola Edge 40 Pro gets stuck in this very same factory mode, the most feasible solution for you is Dr.Fone - System Repair (Android) . This tool fixes all Android system issues including unresponsive or bricked device, stuck on Motorola Edge 40 Pro logo or factory mode or blue screen of death with a single click.

Dr.Fone - System Repair (Android)

One click fix to Android stuck in factory mode

  • You can easily fix your Android stuck in factory mode with this tool.
  • The one-click solution’s ease of operation is appreciable.
  • It has carved a niche being the first Android repair tool in the market.
  • You don’t need to be a pro in technology to use this program.
  • It is compatible with all latest Motorola Edge 40 Pro devices like Galaxy S9.

3,645,867 people have downloaded it

In this part we will explain how to exit Android recovery mode using Dr.Fone - System Repair (Android) . Prior to proceeding, you got to remember that device backup is paramount to keep your data safe. This process might erase your Motorola Edge 40 Pro data.

Phase 1: Ready your device and connect it

Step 1: Installation completion needs to be followed by running Dr.Fone on your system. Over the program window, tap ‘Repair’ afterwards and get the Android device connected.

fix Android stuck in factory mode

Step 2: Select the ‘Android Repair’ option from the list to fix Android stuck in factory modeissue. Hit the ‘Start’ button soon after.

start fixing Android stuck in factory mode

Step 3: Select Android device details on the Motorola Edge 40 Pro device information window, followed by tapping the ‘Next’ button.

model info selection

Step 4: Enter ‘000000’ for confirmation then proceed.

confirmation on fixing

Phase 2: Get in ‘Download’ mode for repairing the Android device

Step 1: It’s important to put the Android device in ‘Download’ mode, here are the steps to do so –

  • On a ‘Home’ button-less device – turn off the Motorola Edge 40 Pro device and push down the ‘Volume Down’, ‘Power’ and ‘Bixby’ buttons for about 10 seconds and un-hold. Now, hit the ‘Volume Up’ button to get into ‘Download’ mode.

fix Android stuck in factory mode on android with no home key

  • For a device with ‘Home’ button – switch it off and hold down the ‘Power’, ‘Volume Down’ and ‘Home’ buttons together for 10 seconds and release. Click the ‘Volume Up’ button for entering ‘Download’ mode.

fix Android stuck in factory mode on android with home key

Step 2: Press ‘Next’ for initiating firmware downloading.

firmware download to fix

Step 3: Dr.Fone –Repair (Android) starts Android repair as soon as download and verification of firmware is done. All Android issues along with Android stuck in factory mode will be fixed now.

fixed Android stuck in factory mode

Part 4. Common Solutions to Exit Factory Mode on Android

Having a backup of all your data will eliminate the risk of losing any of your data. You can now safely exit factory mode using one of the 2 methods below. These two methods will work on a rooted device.

Method 1: Using “ES File Explorer”

To use this method, you will need to have installed file explorer on your device.

Step 1: Open “ES File Explorer” and then press the icon on the top left corner

Step 2: Next, go to “Tools” and then turn on “Root Explorer”

Step 3: Go to Local> Device> efs> Factory App and then open factorymode as text in the “ES Note Editor” Turn it ON

Step 4: Open keystr as text in the “ES Note Editor” and change it to ON. Save it.

Step 5: Reboot the Motorola Edge 40 Pro device

android stuck factory mode

Method 2: Using Terminal Emulator

Step 1: Install Terminal emulator

Step 2: Type “su”

Step 3: Then Type the following;

rm /efs/FactoryApp/keystr

rm /efs / FactoryApp/ Factorymode

Echo –n ON >> / efs/ FactoryApp/ keystr

Echo –n ON >> / efs/ FactoryApp/ factorymode

chown 1000.1000/ efs/FactoryApp/keystr

chown 1000.1000/ efs/FactoryApp/ factorymode

chmod 0744 / efs/FactoryApp/keystr

chmod 0744 / efs/ FactoryApp/ factorymode

reboot

You can also exit factory mode on unrooted device by going to Settings> Application manager> All and the search for Factory Test and “Clear Data”, “Clear Cache”

As much as factory mode can be a useful solution to a number of problems, it can be quite annoying when it pops up unexpectedly. Now you are equipped with 2 effective solutions to help you safely exit factory mode if ever you find yourself in this situation.

Guide: How To Unbrick a Bricked Motorola Edge 40 Pro Phone

Motorola Edge 40 Pro phones are super popular thanks to their excellent features and affordable prices. But being so popular means people try to customize them with custom software. If you’re not careful, you might have a “bricked” Motorola Edge 40 Pro phone. It won’t work at all. It will be more like a brick than a smartphone.

Don’t worry, though. This guide is here to help. It will show you how to unbrick your phone step by step. You’ll learn to bring your phone back to life and make it work again. So, get started on fixing your bricked Motorola Edge 40 Pro phone by reading this article.

destroyed system xiaomi phone

Part 1. Common Reasons Why Motorola Edge 40 Pro Phones Get Bricked

A bricked phone might sound like a techy term, but it’s pretty simple – when your Motorola Edge 40 Pro phone turns into a lifeless block that won’t do anything. In this section, you’ll learn all about why this happens, so you can avoid these issues and keep your phone alive as long as possible.

android logo head with broken glass

  • Trying to flash incompatible ROMs. Sometimes, people want their Motorola Edge 40 Pro phones to run different software like a custom version of Android called a ROM. But if you use the correct ROM for your specific phone, it can mess things up nicely. Also, inexperience with ROM flashing can hard brickyour Motorola Edge 40 Pro Be sure to follow guides and ask for community help online.
  • Rooting mishaps/failures.“Rooting” means giving your phone superpowers, but if you mess up, it can go wrong. Your phone might not boot up, leaving you with a brick. Like the previous bullet, follow guides carefully, especially if inexperienced.
  • Failed Firmware Updates. When your phone asks you to update its software, following the instructions carefully is essential. If you interrupt the process or something goes wrong, your phone could be bricked.

Now, you must know about soft and hard-bricking to learn how to diagnose your phone. Soft bricking is like a phone’s bad day – it might not start up. However, with the right help, you can fix it. Hard bricking is worse. It’s when your phone is a paperweight – it won’t turn on, respond, or do anything useful.

Part 2. Method 1: Use the Motorola Edge 40 Pro Flash Tool To Recover Bricked Motorola Edge 40 Pro Phones

Say you’ve accidentally bricked your Motorola Edge 40 Pro phone due to rooting or ROM flashing. You might feel scared, but imagine having a magic wand that can fix your bricked phone. That’s what the Motorola Edge 40 Pro Flash Tool is –a dedicated Motorola Edge 40 Pro unbricking tool. It lets you install or flash different software onto your phone, giving it a fresh start. Most of the time, a simple firmware flash will unbrick your Motorola Edge 40 Pro.

The Motorola Edge 40 Pro Flash Tool is a superhero for various situations. Here are some scenarios where it can save the day:

  • **Device Recovery.**If your phone is bricked or acting strange, the Flash Tool can help bring it back to life.
  • Firmware Updates. You can use it to install official updates released by Motorola Edge 40 Pro, ensuring your phone runs smoothly.
  • **Device Customization.**Want a different look for your phone? The Flash Tool can help you install custom ROMs or themes.
  • **Bug Fixes.**Got pesky bugs or glitches? The Flash Tool can replace corrupted software to make your phone behave.
  • Performance Enhancement. If your phone feels sluggish, the Flash Tool can boost its speed by flashing a new OS.

How To Use the Motorola Edge 40 Pro Flash Tool To Unbrick a Motorola Edge 40 Pro Phone

Now that you know what the Motorola Edge 40 Pro Flash Tool is all about, it’s time to learn how to use it. If you’ve bricked your Motorola Edge 40 Pro phone, follow the steps below:

  • Step 1. Download the Motorola Edge 40 Pro Flash Tool and the stock firmware of your device on your computer.
  • Step 2. Turn off your phone. Then, press and hold the Volume Down + Power Key simultaneously for 6-8 seconds. This will force your phone to enter the Fastboot mode.

xiaomi press hold buttons together

  • Step 3. Connect your phone to your computer using a cable when you see this screen flash.

xiaomi fastboot screen

  • Step 4. Using the Motorola Edge 40 Pro Flash Tool, click Select. Then, locate the firmware files you downloaded earlier.

xiaomi flash tool browse for folder menu

  • Step 5. Click the refresh button until the flash tool recognizes your device. Then, click flash to replace the firmware. A text saying “success” should appear under the result column.

xiaomi flash tool success screen

Congratulations! Your phone should be up and working after following these steps.

Part 3. Method 2: Wondershare Dr.Fone System Repair – Your One-Stop Shop for Unbricking Your Motorola Edge 40 Pro Phone

If you gave the Motorola Edge 40 Pro Flash Tool a shot and your phone is still not cooperating, don’t lose hope. Sometimes, the magic touch needs a slight variation. That’s where Dr.Fone comes into play. This dedicated software can work wonders when fixing various phone problems. It can even help in cases of bricked Motorola Edge 40 Pro phones involving software or firmware issues.

dr.fone wondershare

Dr.Fone - System Repair (Android)

Repair Android System Errors without Any Trouble.

  • Fix your Android to normal, no skills required.
  • Fix various Android system issues, stuck in boot loop , black screen , or won’t turn on , looping on start, etc.
  • The high success rate in resolving Android system issues.
  • Compatible with a wide range of Android devices and OS versions
  • User-friendly interface with easy-to-follow steps.

3981454 people have downloaded it

wondershare dr.fone interface

One of Dr.Fone’s most astonishing powers is its “System Repair” feature. This is where the real magic happens. If your Motorola Edge 40 Pro phone is bricked, it can help repair the underlying software glitches that caused the issue. Moreover, Dr.Fone brings a toolbox of features to the table, making it more than just a one-trick pony. Here are its key features:

  • **Data Recovery:**If you’ve lost precious data, Dr.Fone can help recover it, even from a bricked phone.
  • **Data Transfer:**You can quickly move data between devices, even if one is unresponsive.
  • **System Backup & Restore:**Fone can help you create a backup of your phone’s system and restore it when needed.
  • **Unlocking Tools:**If you’re locked out of your phone, Dr.Fone can help you regain access.

How To Use Dr.Fone System Recovery Feature To Unbrick a Motorola Edge 40 Pro Phone

Now that you know about Dr.Fone, it’s time to understand how to use it. Hopefully, it can save your bricked Motorola Edge 40 Pro phone from its problems. Follow the steps below:

  • Step 1. DownloadDr.Fone from its official website , and launch it on your computer. After entering the Toolbox menu from the left panel, click System Repair. Make sure that your Motorola Edge 40 Pro phone is connected.
  • Step 2. Select Android on the next screen.

wondershare dr.fone phone os chooser

  • Step 3. Initiate the Android System Repair by clicking Start.

wondershare dr.fone system repair start screen

  • Step 4. Confirm your device details. You can edit any details that might be wrong.

wondershare dr.fone device details confirmation

  • Step 5. Put your phone into Download mode. Follow the guidelines for phones with or without home buttons. Your phone will begin downloading the dedicated firmware.

wondershare dr.fone download mode tutorial

  • Step 6. After downloading the firmware, verify and proceed with the installation by clicking Fix Now. Confirm firmware installation by typing “000000” into the text box in the appearing window. Click Confirm afterward.

wondershare dr.fone initiate system repair

  • Step 7. After the process is finished, your phone should now be okay. Click Done.

wondershare dr.fone success screen

Part 4. Best Practices/Tips Before Unbricking Your Phone

Before diving into the unbricking process, you must arm yourself with some tips and precautions to ensure your recovery journey is as smooth as possible. Here’s what you need to know:

  • Backing Up Data: An Ounce of Prevention. Remember the golden rule: always back up your data before attempting any phone recovery. Unbricking might save your phone, but being safe is better than sorry.
  • **Authentic Tools and Software: Stay on the Safe Side.**Using genuine and trustworthy tools is crucial when unbricking your Motorola Edge 40 Pro This applies especially to Dr.Fone, which you should only download from the official website. Additionally, when recovering your phone’s software, use authentic Motorola Edge 40 Pro ROMs (the operating system’s files).
  • **Learning from Online Guides and Communities: Seek Guidance.**Navigating the unbricking process might seem daunting, but you’re not alone. There are many online guides, tutorials, and communities where people share their experiences and solutions.

Conclusion

So, there you have it – your guide to fixing a bricked Motorola Edge 40 Pro phone. Remember, bricking happens when your phone stops working. You won’t be afraid when that happens, as you learned about the Motorola Edge 40 Pro Flash Tool and Dr.Fone. They are your phone-saving superheroes that can unbrick even a hard-bricked Motorola Edge 40 Pro phone.

As a parting reminder, always keep a tool ready for emergencies. For this, choose Dr.Fone. It’s a super tool for all your phone problems. Give it a shot and be confident with your phone wherever you go and whatever you do with it.

safe Downloadsafe & secure

3,052,835 people have downloaded it


Also read:

  • Title: 7 Solutions to Fix Error Code 963 on Google Play Of Motorola Edge 40 Pro | Dr.fone
  • Author: Ariadne
  • Created at : 2024-05-20 09:03:27
  • Updated at : 2024-05-21 09:03:27
  • Link: https://howto.techidaily.com/7-solutions-to-fix-error-code-963-on-google-play-of-motorola-edge-40-pro-drfone-by-drfone-fix-android-problems-fix-android-problems/
  • License: This work is licensed under CC BY-NC-SA 4.0.