WHMCS – WP Integration

I installed the WHMCS Integration plugin after becoming a WPMUDEV member yesterday and don’t understand the advantage of the plugin because what I’m faced with now is a presentation nightmare. Is the proper method of styling my web hosting sales site achived through modification of the WHMCS Smarty templates? The results of inserting the short code [wcp_content] into the home page of Twentysixteen are extremely disappointing. Please advise.

Thank you,