I’ve done everything you mentioned
Also using Google site
Consent Screen Verified
All permissions added
All credentials added
Google Signing Key SHA-1 | Android credential | Web application | Google Play Games
All linked. My credentials work perfectly on Firebase but not in the Plugin
I had uninstalled everything, all UE versions/Launcher. Deleted everything and installed it again and the error continues for both Play Games Login and Google Login.
Tried in only BP Projects and C++ Projects, removing plugins, changing gradle, making new empty projects, using different SDKs & NDKs, Same things happen using both versions 5.3/5.4 none worked.
I redid the Google Cloud Project, new credentials and NOTHING.
My full projects is perfect no errors in Play Console or UE Editor, but in the Play Console I have this message:
Integrate Integrity API
Add Play Games SDK to your production APK
Everything is set up and the dozens of APIs are also active, because on Firebase everything works