"Closing Link: <IP address> (SASL authentication to a NickServ account with a verified email address is required to connect from your current network. Please see https://libera.chat/guides/sasl for configuration assistance.) "
Well ok, but how do I connect to register, if my account that was registered doesn't work?
same thing on web client. This is probably my VPN at work.
...ok. So it seems the only way to get this working, per Libre, is to register from an IP range they don't block and then use SASL that way.
What I don't understand is what happened with my old registration. I guess it expired...?