My Killing Floor server at 68.36.64.55:7707 has appeared as dead for a a little while now. It never did before, and the IP address or port hasn't changed. There are also other servers on the same IP (including another KF server), and they work fine. The query port of this server is 7717, and always has been. (The default query port for KF is the port 10 higher than the game port.) The server is up, and as a matter of fact there are people in it right now.

If someone could help me fix this that would be great.

Also, here is the link to the gametracker page: http://www.gametracker.com/server_info/68.36.64.55:7707/

Your servers query port appears to be 7708 not 7717. You or someone must have modified it as I found the server with that name at 7708 and modified it from the manage page red box for you.