Social.localUser.Authenticate doesn't work with Google Play Game Plugin

I tried to integrate the Google Play Games Plugin (Version 9.36) into my Unity Project (Unity Version 5.6).
Social.localUser.Authenticate() worked fine, but since I imported the Plugin, authentification always fails.
Is there something special for Google to do before it works or are the versions incompatible?

Thanks for help.

i try every version
use this play-games-plugin-for-unity-0.9.41
my works game perfect