tailscale interface down (red in assignments list)

[Bossybear]

OPNsense v26.7.9_1-amd64
I installed the os-tailscale plugin (v1.104.5) and followed the usual and customary setup instructions.
My firewall is listed as authorized in the devices list on the tailscale web ui.
Tailscale status says it is running, it has an IP address assigned.

When I go to the Interfaces to assign the tailscale interface to a local (opt4) the network status is red (offline)

No matter what I do from here on out, this interface never goes online.

What am I doing wrong?

[Bossybear]

I installed tailscale on another machine on my LAN and it works fine.
I've deleted tailscale from OPNSense. :(