title: Google Play Games returns false on Social.localUser.Authenticate
body: <p>Hello: I've been wrestling a bit with getting my app to authenticate. I've deployed the APK to my Galaxy and the following happens: Unity game opens, "Connecting to..." dialog appears, "Google Play" green dialog appears, dialog disappears with loading indicator and then I get a "false" result.</p>
  
  <p>I have the following in Start():</p>
  
  <pre><code>    PlayGamesPlatform.Activate();
      PlayGamesPlatform.DebugLogEnabled = true;
      AuthenticateGoogle();
  </code></pre>
  
  <p>And the following in AuthenticateGoogle():</p>
  
  <pre><code>private bool AuthenticateGoogle()
  {
      isAuthorized = false;
      Social.localUser.Authenticate((bool result) =&gt; {
          isAuthorized = result;
          if (!result)
          {
              GameObject.Find("errText").GetComponent&lt;Text&gt;().text = result.ToString();
          }
      });
      return isAuthorized;
  }
  </code></pre>
  
  <p>I created a new Keystore using the Unity UI, entered the password and built the .APK. I then created a new application in the Google Play Console and uploaded the .APK to it. I next created a new Game Service and linked the app, allowing it to Trust the application. I created a leaderboard. I ensured my user is in the Testing section. Lastly I copied the XML from the Get resources section under leaderboard to my Unity project and built the project, copying to my phone.</p>
  
  <p>Any ideas? Any other things I can do to troubleshoot authentication versus a true/false result? </p>