Hey. Here is my TF2 server:
https://www.gametracker.com/server_info/193.26.217.35:27308

For some reason, it says server cannot be scanned. Server online, runned, and haas 32\32 at this moment. Here is no fake or idle players.

I checked server ip bans:
sm_rcon listip
IP filter list: empty

I have no any plugins to block scans. No smac or firewall.
Why gametracker says, its offline? Thanks.

The first list of things to check;
http://www.gametracker.com/forums/forum.php?site=1&thread=108248

Be absolutely certain of each point. It is very easy to be wrong. I know

Sometimes mods/plugins can cause problems.
You may have to remove all plugins, then add them back one by one until you find the problem.

There are many TF2 servers in Russia that are scanning correctly, and other game servers on the same IP are scanning correctly.
Logically it must be your game server that is 'different'.

Good luck.

Your server is not completing the query request.

You might try a simple reboot of your server. Otherwise, I would suggest you look into each of the changes you made approximately 2 days ago to figure out which could be causing the problem.

Looks like it was hosting problem. This idiots blocked scanners due "spam".
Sorry.

I am having the same problem with the block ops server on here. It is up and running gametrackers saying it is down but it is not.

http://www.gametracker.com/forums/forum.php?site=1&thread=108248