I am having the exact same issue with this – any of the products I display on the home page using this plugin are showing this code underneath when not logged in. I’ve also had to disable any products being displayed on the front of my site for the same reason, which is far from ideal. Could this possibly be addressed in the next update? Products display correctly in all other locations on the website – it is only the homepage (where they are called by this plugin) that have the issue.