I have 3 Hidden Source servers, I have the web banners displayed on my web site. I have the gametype set to Half-Life 2 Multiplexer. After about 12-24 hours, they seem to be mistaken for CSS server. I still see the map and players, but the map image is wrong.

Thanks.

This is most likely due to the steamappid of 215, which is not HL2. It is most likely defaulting to CSS when the gametype is automatically audited.

How should I go about fixing this? Or is there anything I can do?

Thank you.

I am not too familiar with setting up these servers. You may want to check the command line, config file, etc.