Hello! I had some problem… Only Google Play Games Auth is OK, but
await AuthenticationService.Instance.SignInWithGooglePlayGamesAsync(authCode);
show me “error CS1061: ‘IAuthenticationService’ does not contain a definition for ‘SignInWithGooglePlayGamesAsync’ and no accessible extension method ‘SignInWithGooglePlayGamesAsync’ accepting a first argument of type ‘IAuthenticationService’ could be found (are you missing a using directive or an assembly reference?)”. How to fix it?