Our server are back online.
It can seems that they are still offline for you because it can take up to 24 hours until your used DNS server get updated.
For me and other players it's working fine.
For those who dont want to wait up to 24 hours, you can do the following things:
Option 1:
You can try to change your DNS server or download the latest client here
When using this client you can connect to the server, just use the multiclient to start the game.
Option 2:
Download this file
Copy it into your last chaos directory
right click
extract here (it's important to click this!)
overwrite all files
Quelle: Discord