How to setup saved game in Google Play Games plugin

I have been struggling to setup saved game in Google Play Games plugin.
I followed the oficial documentation:

1- I have enabled Saved Game in the Google Play Developer Console.

2- And copied the game resources from the console, and pasted it into the setup configuration in Unity.

3- Here is the code:

PlayGamesClientConfiguration config = new PlayGamesClientConfiguration.Builder()
        // enables saving game progress.
        .EnableSavedGames()
        .Build();
    PlayGamesPlatform.InitializeInstance(config);

// Authenticate
          Social.localUser.Authenticate((bool success) =>
          {
              if (success)
              {
                  Debug.Log("Welcome " + Social.localUser.userName);
              }
              else {
                  Debug.Log("Authentication failed.");
              }
          });

If I remove EnableSavedGames() the login works properly. I also have tested the sample “Cubic Pilots” provided in the api and it didn’t work.

I think the problem is related with Google Drive api. Since the dashboard in the API Console show this:

I found the solution. The problem was in leaderboard. I turned off the tamper protection and it worked.