iOS app / OSC / Multicast entitlement

Hello!

I am building a very simple iOS app sending OSC command using unreal and blueprints. The app when run from my Mac/Simulated works perfectly, the OSC command is sent. Once I build the app and load it to my iPad the app no OSC command seem to be sent.
I requested the “multicast entitlement” from Apple, it was granted an generated a new provisioning profile.
I added "
com.apple.developer.networking.multicast
" in the project settings additional plist.

But nothing…
Does anyone has any clue on what I am missing?