title: Facebook App Invite Dialog is not working
body: <p>I am trying to integrate Facebook App Invite Dialog in my iOS app.
  For test purposes I created <a href="https://itunes.apple.com/WebObjects/MZStore.woa/wa/redirectToContent?id=422255598" rel="nofollow noreferrer">this</a> test application and generated App Link for it.</p>
  
  <p>Running next code:</p>
  
  <pre>
  
  FBSDKAppInviteContent *content =[[FBSDKAppInviteContent alloc] init];
  content.appLinkURL = [NSURL URLWithString:@"https://fb.me/1453356328318807"];
  //optionally set previewImageURL
  content.appInvitePreviewImageURL = [NSURL URLWithString:@"http://someimage-1200x628.jpg"];
  
  // present the dialog. Assumes self implements protocol `FBSDKAppInviteDialogDelegate`
  [FBSDKAppInviteDialog showWithContent:content
                               delegate:self];
  </pre>
  
  <p>shows app invite dialog with ability to chose friends and send them invites to my app. Everything goes fine, I got invocation of delegate method:</p>
  
  <pre><code>(void)appInviteDialog:(FBSDKAppInviteDialog *)appInviteDialog didCompleteWithResults:(NSDictionary *)results
  </code></pre>
  
  <p>with result:</p>
  
  <pre><code>{
      didComplete = 1;
  }
  </code></pre>
  
  <p>But receiver didn't get notification. Receiver user is also registered user for my app Tester User with native Facebook App installed.</p>
  
  <p>Maybe somebody got same problem and knows how to fix it?</p>