Visual Composer

Hi,
I could not find a way to get premium version of Visual Composer. When editing with other page builders, with preview attribute true in the network path site seems fine but in normal way, it just shows page without theme. How can I see theme in standart mode? I hope you can help me.

Link to site:
http://tiergaming.net/
With preview attribute:
http://tiergaming.net/?preview=true