firebase_auth: Users Unable to Login via Firebase Authentication in Google Play Installed App

[RahmiTufanoglu]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Auth

Which platforms are affected?

Android

Description

Users are unable to log in using Firebase Authentication when the app is installed from Google Play. However, the same app works correctly when running locally during development. All configuration settings have been double-checked and appear to be correct.

Firebase:
1A: Upload Key
2A: App Key

Keys are added to Firebase correctly.

Google Play Console:
1A: Upload Key
2A: App Key

Keys are added to Google Play Console correctly.

Google Cloud:
1A: Upload Key
2A: App Key

Keys are added to Google Cloud correctly.

Firebase App Check:

Firebase App Integrity was enabled and is now disabled.


Expected Behavior:
Users should be able to log in seamlessly using Firebase Authentication, regardless of whether the app is installed locally or from Google Play.

Actual Behavior:
Users encounter login failures when the app is installed from Google Play. No issues occur when the app is run locally.

Reproducing the issue

Steps to Reproduce:

1. Set up Firebase Authentication for the app.
2. Test the app locally on a device or emulator:

• Result: Authentication works as expected.

4. Publish the app to Google Play.
5. Install the app from Google Play.
6. Attempt to log in using Firebase Authentication.

Firebase Core version

3.1.0

Flutter Version

3.24.2

Relevant Log Output

Flutter dependencies

Expand Flutter dependencies snippet

Replace this line with the contents of your `flutter pub deps -- --style=compact`.

Additional context and comments

No response

[SelaseKay]

Hi @RahmiTufanoglu, is this a newly published app?

[RahmiTufanoglu]

@SelaseKay No, it's already in the Play Store

[SelaseKay]

Did you start experiencing this issue after you updated the plugins?

[RahmiTufanoglu]

@SelaseKay No, I think it's a configuration issue.

[SelaseKay]

Did it work previously?

[RahmiTufanoglu]

@SelaseKay Yes, it did. Have you looked at the screenshots? Do you see any misconfiguration?

[russellwheatley]

@RahmiTufanoglu - I would suggest logging (e.g. using crashlytics) the failed login exceptions so you can see what the error code/message is which will help you diagnose the issue.