Thanks Github issues, I had finally solve the solution. The problem is happen with Google app sign in.
From https://github.com/playgameservices/play-games-plugin-for-unity/issues/1754#issuecomment-304581707
What I did:
Google Play Console -> Select your app -> Release Management -> App signing -> App signing certificate : copy SHA-1 (dont copy word ‘SHA1:’)
open console.developers.google.com , select your project -> credentials -> OAuth 2.0 client IDs -> Edit OAuth client -> Signing-certificate fingerprint -> replace the old SHA1 with copied SHA1 ->save.
open you game, you should get sign in -> email selection -> select testers email. Google Play Games Services should work fine now.
and here is blog in case someone need it.
https://kyokurosagi.blogspot.my/2017/05/unity-local-login-with-unity-android.html