title: Google Play Services - The application is incorrectly configured
body: <p>I am getting an error when trying to login to test my app.</p>
  
  <p>It says : The application is incorrectly configured. Check that the package name and signing certificate match the client ID created in Developer Console. Also, if the application is not yet published, check that the account you are trying to sign in with is listed as a tester account. See logs for more information.</p>
  
  <p>I have verified that the package name and signing certificate match what I entered in the Developer console.  Additionally I verified that the app_id is correct.</p>
  
  <p>I have been googling for hours and cannot seem to find a solution that doesn't involve one of those answers. </p>
  
  <p>Any help would be greatly appreciated!</p>