IOS over the air distribution issue

I use Ionic Package builds for IOS and Android. When I test my app using TestFlight, it works fine. When I use Over the air distribution from my local server, the app gets installed but the icon is not there and the app does not start. I am using Ionic 4 and testing on an iphone 6S with IOS 12.1.4 and built the OTA distribution using this antenna :
Am I missing something ?