Hello, Your problem is here you are accesing that page from Hostname or IP, and you should go to WHM->Template Manager-> And Edit the Deafult Template.
You can Add a Code For Rediction if you need.
But first of all you need to add a new Account for your hosting with the domain name.
Be sure on DNS zone that Domain.tld is free if not delete it. and add a new account with your domain infos..
And should be okay.