title: Google GCM - Not receiving push notifications in android Lollipop
body: <p>In my android application I use GCM to receive message from my company server. </p>
  
  <p>I wrote the code for c2dm and I followed the instructions for migrating the code to GCM. (<a href="http://developer.android.com/google/gcm/c2dm.html">http://developer.android.com/google/gcm/c2dm.html</a>)</p>
  
  <p>In android Lollipop (Nexus 9 wifi), the device registers for push notifications and  receives the push registration id, but when I send a message from my server, in the device I don't receive any message.</p>
  
  <p>In previous android versions (from 4.0 to 4.4) I haven't any problems.</p>
  
  <p>Do you know of any problems in push notifications of Lollipop?</p>
  
  <p>Thanks</p>