This bug doesn't seems to be from the server side, but we're still tracking what could be the cause on the game client side.
So right now our only advice is to close the game and retry a few minutes later to check wether you will be able to reach the servers.
If you're still experiencing this issue please send every .log file from your MyDocuments/DogsOfWar folder to our support team :
https://support.cyanide-studio.com/Since some files might be empty, which could be an issue for some mailbox, you should pack them in a .zip file before sending them.
Thanks