title: Firebase push notifications not working for production on iOS
body: <p>I integrated Firebase Messaging SDK into my iOS project, created a push notification certificate for development and one for production, uploaded both p12 keys to Firebase and I do not receive the notifications, but just for development.</p>
  
  <p>The code for registration is good, and it is the same I used for usual APNS, which worked fine.</p>
  
  <p>The same behaviour happens for 3 applications.</p>
  
  <p>Did someone else encounter this problem? Do you have any solutions or suggestions?</p>