title: AdMob Mediation - Facebook Audience Network "We haven't received a bid request" (Swift)
body: <p>So I'm trying to implement FAN using mediation via AdMobs. I have taken the necessary such as:</p>
  <ul>
  <li>Adding adapters</li>
  <li>Ensuring my app has been accepted/verified by Facebook</li>
  <li>Creating a mediation group</li>
  </ul>
  <p>However, when looking at the business manager dashboard, it states there's an issue, the issue being:</p>
  <blockquote>
  <p>We haven't received a bid request</p>
  </blockquote>
  <p>If I view the SDK instructions, it's shows my placement IDs, system user access token, both which I have added to AdMob, however, I'm also greeted with App ID. And for the app id, it states: <code>Add the app ID to your app and Google AdMob.</code> I'm sure this is the one thing, I haven't done, but looking at Google AdMobs, I can't find anywhere to add my app ID and furthermore, trying to set it in my application, there doesn't seem to be any way i.e. <code>FBAudienceNetwork.appID()</code></p>
  <p>So I'm a bit confused, my mediation report for AdMobs shows there have been requests as well with FaceBook, but now theres nothing to show.</p>
  <p>Can anyone help me sort this issue?</p>