The New Gamers Forum Minecraft Server

[Slay]

IP+Port (69.174.245.105:25567) is the only connection method that works for me, using just the IP or hostname gives me the same errors.

So if you haven't, try that method.

I had that same issue (As a server hoster) . The Solution was putting the port in the port (or range) has to be the same as the host port, as well as the fact you can't leave one blank.