Hello, my server (https://www.gametracker.com/server_info/109.248.229.31:7707/) works fine and has no issues in connecting via Game but It is not shown up here! It always worked and all ports are set well: 7707 and 7717 (default). Maybe You locked IP in your data-base?

>Your server is currently offline.
The server is online!

>You entered the wrong query port.
The port is set correcrly!

>Your server is firewalled.
It is not firewalled!

Please, write back soon as possible. I hope, You will help to solve the problem.

I will be waiting for the answer.

P.S. Server's IP: 109.248.229.31:7707

My server will not add or shows as down, what should I do?

If you managed to add it to originally, and there no global issues (none that I am aware of), then you must look to your host / server configuration or any changes you, your host provider or ISP have made.

No other servers appear to be having any difficulties at this time.

I have added your IP and Port to my favorites in-game, and it shows as Unknown Server, no stats. If it was online at the time of this reply, check the settings of your server's killingfloor.ini file. Missing settings, or an accidental space somewhere may cause this. I have made similar mistake once