title: iOS Facebook sign in failed
body: <p>It shows </p>
  
  <blockquote>
    <p>This app is still in development mode, and you don't have access to
    it. Switch to a registered test user or ask an app admin for
    permissions.</p>
  </blockquote>
  
  <p>But I have made GuGu public under Facebook dev website's App Review tag(Turned on the switch), and it show </p>
  
  <blockquote>
    <p>Your app is currently live and available to the public.</p>
  </blockquote>
  
  <p>I may needn't public this app for now, because I just wanna test Facebook sign in with dev account or some test accounts.</p>