If you are seeing the Unfortunately, Google Play Store has stopped  error message on your Android phone or tablet, it could be caused by any number of things. Some potential issues are a lack of internet connection, not enough storage space, or corrupt data.

Fix issues with Play Store\n\n If you can't find the app in your list of all apps: Confirm you're using a supported Android or Chromebook device. You may have hidden the app and need to re-enable the app. Turn off your device and turn it on again.

Go to the Activision account password recovery page. Enter the email address that was used to create your account and select SUBMIT. If you have a valid account, password recovery instructions have been sent to the registered email address.