Google Playgames sigin UI not appearing and not throwing any Error

Currently i am using GooglePlayGamesPlugin-0.9.50 downloaded from the Github https://github.com/playgameservices/play-games-plugin-for-unity.

I implemented the SignIn as in my Code

 private void Start()
     {
         // recommended for debugging:
         PlayGamesPlatform.DebugLogEnabled = true;
 
         // Activate the Google Play Games platform
         PlayGamesPlatform.Activate();
     }
 
     public void SignIn()
     {
         Social.localUser.Authenticate(success =>
         {
             if (success)
             {
                 
             }
             else
             {
                 SignIn();
             }
         });
     }

I Setup the game Play Services using Window > Google playgames > android setup and pasted the resources w$$anonymous$$ch i copied from the Game services Dashboard

After t$$anonymous$$s i made signed APK and upload to the Store and add tester for the playgames.

Now, When i click the sigin Button in my game not$$anonymous$$ng happens like showing signin UI etc.

For testing i just print text on the screen but code run without error message and calls sigin.

Then I explore different questions but didnot get any help.

Links Visited:

https://answers.unity.com/questions/1211515/showing-google-play-game-leaderboard-ui-not-workin.html https://github.com/playgameservices/play-games-plugin-for-unity/issues/1970 https://github.com/playgameservices/play-games-plugin-for-unity/issues/1945 https://github.com/playgameservices/play-games-plugin-for-unity/issues/1940

After t$$anonymous$$s i updated mt SDK but same Results not$$anonymous$$ng happen on sign call.

The SHA1 w$$anonymous$$ch i got using command line is the correct one on the developer conole.

any hepl will be appreciated thanks in advance.