Garry's Mod Server won't show up!

Hello there, i recently purchased a server off Xenon Hosting. And i set up the whole server with good addons etc. But then you know you want people to join.
But when i go to Browse Multiplayer Server > Internet > Trouble In Terrorist Town. And then search my server name or ip it won’t show up! my server won’t show up in the list!
Because most server hosters have their server instantly in the list but mine isn’t and also they are not responding on my ticket thats 3 days old… someone help me?

Pictures:

Get a new host if you aren’t receiving the support you’re paying for.

Well these Xenon Hosts don’t refund