Yesterday (or today, depending on your time zone) the servers suffered a DDOS attack, which in layman's terms means that some people decided to prevent use of said servers for a while. If you've been having trouble getting into the game or suffering random disconnects, it is likely a result of that. Muse is working to get these issues fixed, and the game should be running as normal soon enough. In the meantime, sorry for the inconvenience.