I have created an app and after verifying I uploaded to Google Play and It got rejected due to that error " Provide instructions for app access ". So I did. added signing in details, method in the app access section in the “App content”. after second rejection to to the same reason, I created a “testing google account” - fake account - and provided the credentials of that account into the “App access”.
the Problem is that Google Testers get “Login failed” while I have tested the account many times, and I have tested the APK on many devices and it is all working well.
Could there be a problem in the “compiling APK from the AAB file uploaded” this seems the only gap i can think of. all my testing with all my users are for the APK compiled in Kodular Creator and the login credentials are OK.
Google Staff compile the APK from the AAB and they get the fail message.