Issue with and confused about the redirections in Pro-Sites

Currently I have premium members site and in configuring Pro-sites on this domain (http://premium.paraquor.com/) iI have created a test site (http://premium.paraquor.com/test/) which requires an upgrade to view the site (makes sense, that's what i want); however, when I click to upgrade it takes me to this page (https://premium.paraquor.com/premium-member/?bid=2) which is an SSL page. Does this mean I have to install an SSL cert to make this work... how can I get help on making this work? I also want to integrate my WHMCS on this... please advice.

Mike