If you are seeing pages like that then your Sentora is not installed properly or something else is controlling your apache/php (like a previous hosting service).
Sentora's default parked page looks like this:
Did you update the domains to point to your server?
What is the URL in the browser for the parked domains?
Sentora's default parked page looks like this:
Did you update the domains to point to your server?
What is the URL in the browser for the parked domains?