title: OAuth exception with invalid application id
body: <p>Actually we created an app inside facebook and using the app id provided, the android application was able to post messages.
  Recently we changed the facebook username and primary email address.
  After this, our app stopped working on the facebook login. It doesnt event show us the facebook login screen in the webview.</p>
  
  <p>We are getting the following exception
  {
     "error": {
        "message": "Error validating application. Invalid application ID.",
        "type": "OAuthException",
        "code": 101
     }
  }</p>
  
  <p>Will be happy is someone helps us out in this.
  Thanks in advance.</p>