Hi J.J.,
In this issue, you have to install your own WHMCS (by purchasing a WHMCS license) in your server. After then, you need to connect your WHMCS in WordPress using whmcs bridge plugin to get all of the things like our demo.
Moreover, please learn more our full support policy (item support includes & not includes), here https://www.themelooks.com/support/support-policy/ before post a topic or ask for support.
Best Regards,
ThemeLooks Support Team