Unity Authentication - SignInWithGoogleAsync Throws Permission Denied

I’m sure I am missing something silly but when I pass the Google ID token to Unity Authentication I get the errors:

[Authentication]: Request failed: 401, {"title":"PERMISSION_DENIED","detail":"validation failed","details":[],"status":401}
WebRequestException: {"title":"PERMISSION_DENIED","detail":"validation failed","details":[],"status":401}

Below is my code, any help appreciated:

async void Awake()
{
    await UnityServices.InitializeAsync();
    InitializePlayGamesLogin();
}
  
void InitializePlayGamesLogin()
{
    PlayGamesPlatform.Activate();
}
  
// Call when login button is pressed
public void LoginGooglePlayGames()
{       
    Social.localUser.Authenticate(OnGooglePlayGamesLogin);
}
  
//Check login success
async void OnGooglePlayGamesLogin(bool success)
{
    if (success)
    {
        // Call Unity Authentication SDK to sign in or link with Google.
        string idToken = PlayGamesPlatform.Instance.GetUserId();
        await SignInWithGoogleAsync(idToken);                          
    }
    else
    {
        Debug.Log("Unsuccessful login");
    }
}
  
async Task SignInWithGoogleAsync(string idToken)
{
    try
    {
        await AuthenticationService.Instance.SignInWithGoogleAsync(idToken);
        Debug.Log("SignIn is successful.");
        //if sign in successful turn off login screen.
        loginScreen.SetActive(false);
    }
    catch (AuthenticationException ex)
    {
        // Compare error code to AuthenticationErrorCodes
        // Notify the player with the proper error message
        Debug.LogException(ex);
    }
    catch (RequestFailedException ex)
    {
        // Compare error code to CommonErrorCodes
        // Notify the player with the proper error message
        Debug.LogException(ex);
    }
}

Having this problem too - did you manage to fix it? @wheeis

I use

PlayGamesPlatform.Instance.ManuallyAuthenticate

instead of

PlayGamesPlatform.Instance.Authenticate

Now I can logout and re-login success every time.