WHMCS Provisioning sites not working

I think I am missing something very obvious but I just cannot get it. I have WHMCS Provisioning setup according to the instructions.

I can go through the client portal of whmcs and order a wordpress website and it does show a new site under my multi site listing in wordpress. So say I select test.mydomain.com, it creates a listing in wordpress with a new site called test.

From here is where I get a little confused. I am not able to go to test.mydomain.com. I also tried using test.ipaddress.com and still nothing. I assume I am doing something wrong with dns or something with domains.

Also, am I able to create a cpanel account using this setup?

Any help would be appreciated. Thanks!