I am trying to get Roon ARC to work. Port forwarding doesn't work so I am trying tailscale. But I can't connect to my roon web admin page to enable tailscale. The roon app does not find it.
There is no web admin page for Roon on Debian, only for Roon OS (Nucleus, ROCK). If you are running Roon on Linux, follow the documentation for Roon on Linux.