I added my server and it was fine but some time later the channel info becomes unavailable. It says my server is offline but in the status is alive, which it actualy is.
I've noticed that Gametracker query user times out everytime a connected is made. I've added gametracker ip's to whitelist and firewall of my vps and i still got the error.

http://www.gametracker.com/server_info/37.187.66.205:9987/