title: Push notification not receive when Re-login after logout using FCM
body: <p>I don't get the FCM push notification when I logout in my android app.
  The first time I login FCM works fine but after I logout and re-login it would not work. But if I re-login again it works fine. I couldn't find any help.</p>
  
  <p>Detail:</p>
  
  <ol>
  <li>First Login FCM work Ok.</li>
  <li>Logout and re-login FCM push notification would not work.</li>
  <li>Again Logout and re-login also work fine.</li>
  </ol>
  
  <p>Logout Code:</p>
  
  <pre><code>FirebaseInstanceId.getInstance().deleteInstanceId();
  </code></pre>