I have noticed that for some people the server does not show as being online. Rest assured that the server is functioning as intended. If the server does show as unavailable for you, try logging in anyhow (it worked for me). If you still cannot log in use the direct IP address to log in. the IP address for the server is: 188.8.131.52:25565 .
If you try all of these things and are still having trouble logging in, hit me up on steam and I’ll do my best to work you through it.