Hi all,
I just enabled Sign in with Apple for my app for the first time.
The app is built with FlutterFlow using its native Authenticate with Apple action.
When I tap Sign in with Apple, nothing happens: the Apple authorization sheet never appears.
To investigate further, I created a custom action that directly calls:
SignInWithApple.getAppleIDCredential(...)
and catches any exception.
It consistently returns:
SignInWithAppleAuthorizationException( AuthorizationErrorCode.unknown, The operation couldn't be completed. (Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1000) )
The app is distributed through TestFlight and the issue occurs on a real device.
I'm wondering whether anyone has experienced the same behavior after enabling Sign in with Apple on a new App ID.
If so:
Did the issue resolve itself after some time? Was there any Apple-side propagation delay involved? Or was there an additional FlutterFlow or Apple Developer configuration that I might be missing?
What I've already verified
✅ Sign in with Apple capability is enabled on the App ID.
✅ Distribution certificate is valid.
✅ Provisioning profile was regenerated after enabling the capability and lists Sign in with Apple under Enabled Capabilities.
✅ Firebase Authentication has the Apple provider enabled.
✅ Google Sign-In works correctly in the same TestFlight build.
✅ Tested only on a physical device via TestFlight.
✅ Rebuilt and redeployed the app from FlutterFlow after every configuration change.
✅ Disabled Firebase App Check enforcement for Authentication as a test (no change).
Any suggestions or similar experiences would be greatly appreciated.