Since I have moved house, the web server for axotron.se also had to move. Unfortunately it was not quite as much plug-and-play as I had hoped, so the move resulted in a few days of downtime. The main problem was that I had to ask for a unique public IP address from the service provider Bahnhof and that I did not realize that the IP address I otherwise got was not unique for me (how does that work?).
Anyway, their support fixed the IP uniqueness problem while I talked to them today and now everything seems to be up and running again.