The problem
I have an alpha version of an Android game made in Unity. This game has integration with Google Play Services, which was accomplished using the Play Games Plugin for Unity. I'm trying to log into Google Play Services, and while myself and other test users get the initial login animation, ultimately the login callback fails.
Things that I've checked:
- The APK was accepted and is signed with an appropriate keystore.
- The Android project is linked with the Play Services one.
- I have created an alpha version and deployed it in the platform.
- My Google account, that I've used for logging in, is in the alpha channel.
- Said channel is active for the game's alpha.
- The application is available for all countries.
- I installed the Android 9.0 SDK and all Google modules using Android Studio.
- I'm using Android 9.0 on my phone, same as the installed SDK.
- I'm using the latest version of the Play Games for Unity plugin.
- I copied the GPGS resources and initialized the GPG plugin; all OK and no warnings.
- The game was built on release mode and not debug mode.
- The game and the Play Services are ready and have no pending tasks in the platform.
Does somebody know what I might be missing? Thanks in advance.