title: iOS Push Notifications not working with Development certificate
body: <p>Situation: we have PROD and DEV APN certificates installed on different backend URLs. PRODUCTION certificate works!: pushes are delivered. </p>
  
  <p>DEV certificate does not work, apple servers return error code 7 (invalid token). I have already checked all the stuff but may be I'm still missing something. </p>
  
  <ul>
  <li>app id is correct (same used for prod)</li>
  <li>i use right backend (with DEV certificate installed) </li>
  <li>I start the app from XCode in DEBUG mode (corresponds to DEV environment)</li>
  <li>I use proper app development certificate, from the same account </li>
  <li>I use proper dev profile (pushes are supported in it)</li>
  </ul>
  
  <p>Should actually work, right? </p>