We are closing down. For reasons of quality assurance of the offered services, unfortunately some of them have to be shut down. Unfortunately the XMPP service on the domain nsa.li is not among the services on the shortlist. I am sorry not to be able to bring you better news.
The registration on the server is already closed. The accounts will be deleted as of 1st of March 2020. Please find a new Jabber server until then.
Recommended servers are among others: