Look at this example
https://www.gametracker.com/server_info/108.61.122.109:27980/server_variables/

Server variables are reported to be updated once every 24 hours. However this appears to have stopped working after the Nov 2024 HL2DM update. All of the details are frozen and out of date.

I reported this as a BUG here https://www.gametracker.com/forums/forum.php?site=1&post=491685#post491685

But for some reason the moderator moved it. If it is not being seen as a bug no one will likely see a need to fix it. It's a long standing feature that is broken, not working, it worked before. A bug!

Please investigate and fix.