are you able to connect using localhost as the ip?
What would the IP be? I just tried it now
if the server is on the same computer then where you would put an ip just type localhost
But I use Port Map to allow some friends at their houses to join as well, giving me an IP for them, but they still can't connect:/
make sure you have forwarded the port in your modem/router you can find your external ip by goggling my ip if there is any issues then check your firewall and port forwarding