title: Could not launch app (Verify the Developer App certificate)
body: <p>I have an issue sometime when I run the app in my iPhone with Xcode.
  <img src="https://i.stack.imgur.com/semgM.png" alt="Message in Xcode"></p>
  
  <p>I tried to verify apps in Settings but it didn't work. "Unable to Verify "iPhone Developer: ..." Apps.</p>
  
  <p>I am a Free developer but it normally runs and sometime during 1 hour I can't run anything on my iPhone.</p>
  
  <p>I tried to delete the app and run, to download all profiles in Xcode Settings, same problem.</p>
  
  <p>Do you have any idea to solve it ?</p>
  
  <p>Thanks for your help.</p>