You don't need to pay anything. You can host as many domains as you want.
What do you mean by not seeing anything? Is it the directory listing page that you'd see with an empty directory?
If so, the files aren't being put in the right place.
If you're sure you put them in the right domain.com folder, be sure it's under the right user:
isn't the same as
I'm also assuming that if you registered the domain somewhere else, you set the nameservers to:
If the domain is pointing to the right place, the files must be in the wrong place.
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