Hi everyone,
I’m experiencing an issue with Google Sign-In on iOS TestFlight. The signin works perfectly on Android (both APK and AAB), but fails on iOS TestFlight.
In Google Cloud Console, I see “Unknown command” errors when attempting to sign in, which suggests communication is happening but being blocked.
Has anyone else encountered this? Is it a known TestFlight limitation with OAuth, or a keystore/certificate mismatch?
I’m using Automated Provisioning with Firebase Authentication configured correctly (SHA-1 fingerprint, Client IDs, etc.).
Thanks for any insights!