After about a thousand attempts I was able to AND login. I had every single possible issue last night from banning to refused login and also unauthorized player name. At one point I connected to the server but my character list wouldn't show up. Another time I could click on my characters but I couldn't press play. I had to try a few times today but finally connected and was able to log on.
-Also, I was able to connect just fine to a number of other servers Dunno if this helps, but it seems that potm is the only server having issues like this.