You need to show your setup in project settings. otherwise no one can tell, what’s wrong.
The easiest way is to create a new project with XCode with the same project name as your UE4 project, choose automatic signing, let it handle everything.
No need to use this project in any way, it’s only purpose is to handle the whole singing on the Mac.
Then make sure you set the exact same name, profile, certificate etc. in the UE4editor project settings.