I can’t even view your homepage. I only saw a blank page.
No luck. I still see a blank page.
I’ll suggest you to check apache log which locates in /home/USERNAME/logs
Has your site ever worked here? As a lucky shot, go to the panel for Domains -> Manage Domains and Edit your domain. Don’t change anything, but just click the Save button for your settings which will force an update on the server with your settings.