My main domain works just fine - www.example.com and a subdomain set up by another developer works as well - sub1.example.com. But when I try to set another subdomain up I go through the process everything seems to work. The software creates the default files where the subdomain files should go. But when I try to browse there it doesn't work. My host uses Plesk to do all of the hosting stuff.
What do you think the problem is?
I doubt it is some sort of cache issue because I had problems on my phone which I tried after problems on the pc. Maybe for some reason Plesk needs time to set this up? I have used Cpanel before and that works instantly.
EDITED Additional Information provided by the OP
When I ping the domain I receive this reply:
ping: cannot resolve drnick.burnhamrichards.com: Unknown host
Viewing the url in my broswer gives this error:
Oops! Google Chrome could not find sub1.example.com
I visited the IP and I got a generic landing page that says something like "welcome, you see this page because there is no website at this address" and since I am using virtual hosts I imagine that is what I am supposed to see.
When I log into plesk I see that the a-records for both sub1.example.com and sub2.example.com are pointing to the same IP.