I am facing an issue with Firebase Authentication in my Android app (com.joel.findgo) when downloaded from the Google Play Closed Testing track, but it works completely fine when installed locally via Android Studio.

The Problem: When users download the app from the Play Store link, logging in or registering a new user via Firebase Authentication fails.

What I've done so far:

1. Identified that Google Play uses Play App Signing, changing the app's signing certificate.

2. Retrieved the SHA-1 and SHA-256 fingerprints from Google Play Console under "App signing key".

3. Added these fingerprints to my Firebase project settings.

4. Downloaded the updated google-services.json file and placed it in the app/ directory.

5. Incremented the versionCode and uploaded a new App Bundle (.aab) to the Closed Testing track.

Despite updating the fingerprints and google-services.json, the authentication still fails in the production/testing build. Is there any other step required to sync Play App Signing with Firebase Auth?

Here are the fingerprints I registered:

- SHA-1: D7:10:0E:B0:1F:F1:CE:C8:E2:C6:FB:15:63:8E:C2:C2:AF:ED:8B:9D

- SHA-256: 23:64:27:A0:74:47:E5:5A:A0:20:D1:2B:F6:EE:51:FD:D4:8C:12:F4:0F:6F:2C:71:9D:03:49:6B:A3:9E:BE:34

Any guidance would be greatly appreciated!