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.