I'm having trouble getting anything to show up using both shortcodes and widgets.
I orginally had my WHMCS installed at http://www.moonworkspublishing.com/billing, but the plugin always removes anything after the .com, so I moved it to a subdomain at http://billing.moonworkspublishing.com both inside the whmcs folder and in the root (I'd prefer it to be in the root).
I've added various shortcodes and widgets, but they are just blank.
On my page I have the menu widget at the top of the sidebar and the following on the page:
But as you can see, there is nothing there: