Hi Christian, taking a guess here, but what stood out to me is the error regarding no internet connectivity when attempting to connect to http://ocsp.apple.com
thats an apple certificate validation server
most likely scenario is maybe that this is first launch of app on this device, and the OS is attempting to validate the signing-certificate/app with apple servers, and can't reach them because the device has no internet connection.
this page shows the purpose of the URL as certificate validation:
https://support.apple.com/en-us/101555
if the certificate can't be validated, it won't launch the app
Topic:
Code Signing
SubTopic:
General