Feral Heart

So I downloaded the game today and decided that it was best to change my username to something different, I do that and have no problem. Everything goes well until I try and put my username and password in; it won't let me in. It doesn't tell me that there is something incorrect with either my user or password but that I ''can't connect to front server.'' What do I do? Is it because I changed my username? I don't think that's why it isn't working but I'm not sure. My connection is great too so I don't understand. Please help.