Can't get Webmail to Open

I'm new to GoogieHost. I have a free hosting account and I have transferred my domain name from a previous hosting company to GoogieHost. I've also created an email address, but I don't know how to access the emails.

When I click on "Webmail" from within the Client Area, I get a "404 Page Not found," and in the address bar I see this: https://cloud.googiehost.com/horde

I've also tried entering this in the address bar: www.mydomain.com/webmail (where I substituted my real domain name for the "mydomainname" part), and it says "Can't display this page."

Apparently cPanel isn't available in the free hosting version, so how do I get the webmail to open??

I'm also new to GoogieHost.