I am having the same issue. I have followed all the steps.
On the unraid dashboard, it is showing "online : Yes"
On the tailscale website it is showing my unraid server as "Connected"
but on the tailscale settings page is it still no showing the connection page that everyone else is seeing.
and in my plex docker, it is showing "use tailscale: Option disabled as network type is not bridge or custom"
I have changed settings to enable EXIT MODE.
I have reauthenticated.
I have erased tailscale configuration and relogged in when prompted, but still it is returning to the tailscale screen that is not showing me logged in.
I am on google fiber if that has anything to do with this issue, but I am suspecting that the issue is entirely a setting on the server itself.
I truly have tried reading through all the pages of this support thread before posting. I simply do not know what I am missing. If anyone has any advise for me, it would be truly appreciated.