Hi,

we have a game server Wolfenstein enemy territory, that utilises the port 27960. The Query port is also 27960 for this game..

People can join it but Gametracker has been saying it's online and offline regularly.

The IP of the server is: 119.252.190.217 port: 27960

Not sure what's going on here, the port is definitely unblocked, along with the gametracker IP's.

Hope you guys can help.

Your server is not responding properly to the query.

You can try restarting the server to see if that helps.
You can try undoing your recent changes to the server you made around 6 days ago when it stopped showing online.
You can try removing your mods.
You can try reinstalling your server.

Good luck.