this may be sopose to go in server section but imma not sure and imma not care.
Ok your problem can be a few things. first off, wait a little while and then look if ur server is there again, can sometimes take a little while before ur server shows up.
Firewall Blocking ports? Disable it, or even better forward the ports. You can find how to do that over at
Portforward.com. That is probably your problem. Make sure you forward 30720 UDP and 30710 UDP . Than reload your server. If that fails... maybe you have a hardware firewall in your modem? I got one of those I cannot host a server for that reason if ym life depended on it.
Also you can try if you know a port is forwarded running your server using a port of your choosing. When in cmd [I am guessing you are usign windows] and you type ur line tremded.exe + set dedicated 2 + exec server.cfg do this instead:
tremded.exe + set dedicated 2 + exec server.cfg +set netport [port # goes here]
I think its set netport but ti could be ser net port.. so a space in between net and port..
I hope this helps, gave it my best shot.
What OS are you using, would be useful to know for further support from othe rplayers and /or me.