Restaurant Reservation plugin does not display booking form on upfront/scribe.

I'm designing a restaurant site using upfront/scribe and wanted to use the restaurant reservations plugin, however, the booking form doesn't display on the live page. The booking form does display when I activate a different (non-upfront) theme.
I have attempted the default, shortcode, and widget methods of displaying the booking form but none of them work properly.
I have disabled the other plugins for this site and also granted support access.
Can you advise what I need to do to get this plugin to work with scribe?