Hey that’s me!
One thing I noticed is I never updated the app icon customization section. You don’t need Asapticons/Icon mixer. Themepark has an option to add custom icons now!
I can also post my De-Bloater config (root only)/list of apps (that can be used to disable them via ADB) I’ve removed when I update the post in a bit.
I’m still on Fold3/OneUI 5.1 but apps should be similar.
I’m a little confused, mine is setup in the same way you described I believe and accessing the subdomain without any additional port still forwards it correctly to the destination ip:port.