I've unblocked social.xeltica.work now! Sorry for the inconvenience—if you were following any user there from cybre.space, you'll have to re-follow.
(I would have silenced, but i'm not sure that silence correctly blocks follows / follow-requests)
(if i was thinking ahead, i would have done something more subtle, but I was on my phone and forgot to check if we had legit accounts federated from that instance)
Cybrespace is an instance of Mastodon, a social network based on open web protocols and free, open-source software. It is decentralized like e-mail.