Google Play Services - ERROR_NOT_AUTHORIZED

Hi, i have problem with Google Play Services API for Unity.
I want achievments in my game, but Authentification not working for me at all.

Plugin: GitHub - playgameservices/play-games-plugin-for-unity: Google Play Games plugin for Unity
Unity 5.5.0f3

I have all setted up correctly: Play console tester email, achievments, OAuth, Plugin setup, SDK…

anyone please help? :smiley: