Remove default profile from HBOMAX in Apple TV app

i want to remove the default profile (owner?) in my HBOMAX Apple TV app so I can make myself the owner. I can delete other profiles but this one is the one that was used when the app was installed and now I can’t remove that default profile. I tried deleting the HBOMAX app on my 4th gen Apple TV. When I reinstall it, the profile I want to remove is still the default.

How do I remove or change which profile is the default. I get HBOMAX through my cable service. I called them and they were no help. And HBO doesn’t give a phone number.