It has come to my attention that people are unable to register with Tor Messenger due to a bug where the client doesn’t attempt to fetch the SRV records. This is currently listed as a bug report on their mailing list here: mail-archive.com/tor-bugs@lists.torproject.org/msg84732.html

Hopefully this is fixed soon but I have made a guide that contains a work-around for those who want to use Tor Messenger right now.

See that guide here: xmpp.is/docs/connect/tor-messenger/