Social on Android and iOS not working

Hello all,

I'm trying to use the Social API, but I'm getting a lot of problems.

On iOS I'm able to login, to report the score on the leaderboard and to see both the achievements and leaderboards UI, but there is no way to show the achievement banner even using the GK.

On Android I'm able to login but report score returns me alway false, don't know why because I am not sure if I can print an error code or message, and I cannot show the leaderboard UI.

For Android I'm using the GPGS plugin for iOS the Unity+GK.

The game has been published on iOS and Android but I didn't enabled the game services, I did it later enabling the achievements and leaderboards in the features section on my App on iTunes connect and linking my App to the Google Play Game Services on my Console Dev. Not sure if this could be related to the problem.

Any help? Thanks.