My server : http://www.gametracker.com/server_info/181.177.204.201:27016/

It's shown as off, but it's on, I don't know what to do, My rank is affected.

I will be open to whatever you ask.

Please answer.

Germán. Comunidad SIG.

Please open port 27016 in your firewall and check in a bit.

This has something to do with gametracker? Because the server is given to me via host. So I cannot touch the firewall..

No, the query port is not the issue. GameTracker has been up and down with reading the servers. GameTracker needs to lend a hand with what to adjust or if its on their end.

The server is not responding on 27016. If you'd like to confirm, download a tool like HLSW.

If you notice the server showing online then offline then online and so on, it's typically due to your server temporarily blocking the scanner.
If you're able to hit Update Scanning Parameters to get it back, but then it goes offline shortly after, you are blocking one or more of the scanner ips.

Considering it's not just the scanner that cannot reach your server, it's unlikely to be one of these, hence my original suggestion.

Please contact your system administrator for further assistance. We are not able to get too in depth assisting you configure your network properly for a number of reasons.

Yes I can confirm nothing is wrong on GT's end in regards to the question.