title: Connecting to Google Play Games
body: <p>I have successfully added a Leaderboard to my game but I cannot open it (with <code>startActivityForResult()</code>) until I have called <code>mGamesClient.submitScore()</code>.  There are already scores on the leaderboard so it is not the fact that there aren't any scores.</p>
  
  <p>I am having the same problem Achievements.  I am unable to unlock an achievement.  The IDs for the leaderboards and achievments are correct.  Using <code>mGamesClient.connect()</code> does not help. What might I be missing?</p>