Make Third-Party App Display in Body of Site

I am working on a site that is using a third-party rental software called Booqable. I have successfully installed the javascript code to add the plugin to my site.

However, every time I add the div class code to display the products, it either adds the store above the header or below the footer. How can I get this to appear in the body of my site?

Site example is www.socialllamaevents.com/store

I would try using an iFrame for this so you adjust the list’s position.