Just as a heads-up, as a hosted customer you can also contact the customer support team directly at team@discourse.org. 
Asking the community can be great for lots of things, but it’s nice to know there’s also a channel for dedicated support if you need it. 
Also some potentially useful guides:
Configure your domain name for hosted Discourse
Configure your hosted Discourse site to run at the root or apex domain (e.g. example.com)