If so the ‘Not Ready’ status and any diagnostic text on the Roon Settings Roon ARC page are irrelevant because they only pertain to the port forwarding setup.
Thanks for the details, and thanks Wade for the Tailscale question, that’s worth confirming too.
On our end, we can see your Nucleus One hasn’t checked in with us for about 5 days, which lines up with what you’re describing.
Could you please try the following to help us narrow this down:
Please try accessing the Nucleus’s own Web Administration Interface directly, by typing its IP address into a browser on a device on the same network (not through the Roon app). If that loads, the unit is at least powered on and reachable on your network, which would point us toward a Roon-specific issue rather than a hardware one.
Please also try connecting the Nucleus to a TV or monitor via HDMI to see if anything displays. If the unit is completely unresponsive with no HDMI output at all, that would suggest a hardware-level problem rather than something we can fix through settings.
Please let us know what you find with both; that’ll help us figure out the right next step.