I just put out a client update on steam that should get you connected to the game again. Our ingame news is still offline but that's okay.
**All changes made on this server will be kept!**
Non-Steam users:
You'll have to change your config file. In the games program files you'll find a file called config.ini.
In this file change the line that says "IP=srvr2.serv-everything.com" to "IP=70.169.41.89" save it then run Mystica again.