When you have installed our plugin on your SourceMod* enabled server, we have a script which contacts our Backend servers and sends a command to add your server to our list.
Sometimes this fails due to various reasons, the most common one is a lack of connection to our servers.
This can be easily rectified by either restarting your server to re-establish a connection or simply waiting for a few more hours which the list is updated.
If your server still doesn't show up within 48 hours, please contact us and we will be pleased to help.
* Currently this feature only works on SourceMod Servers, we are working to enable this on more plugins