do you have local ssl certificates set up. I suppose you may need to use http://mytailscaleaddress:3355
When I tried adding my server it wouldn’t connect. I added https://mytailscaleaddress:3355.
In a web browser this gives me the outbox page. Some clients connect to the relay ok (ws://…) but not sending notes. Maybe I have something misconfigured.
do you have local ssl certificates set up. I suppose you may need to use http://mytailscaleaddress:3355