Hello,
Take our apologies for the delay. It’s related to a number of requests that we got from our users.
You used the Product element on the page http://prntscr.com/oy95fq but did not choose the product to show it caused the fatal error on the frontend. If you use Massive Addons element for the products or categories make sure that you chose the products or categories in the list that you want to show.
Regards