FWIW, my setup is identical to yours. Migrated from 24.10 to Fangtooth, but Pihole, NPM, and Dockge all seem to be causing problems. I’ve got HA running as a VM, so I wanted to see what it would take to migrate it to the new Instances system, since the take is that Instances is better, it’s just very new.
I’ve posted in a few places, and it seems like right now, unless there’s something I’m missing, the best solution is to configure each app to use a dedicated IP. I’d just like to understand if this will become a requirement going forward, or if this is just a workaround because things are so new.