I'm not comfortable granting admin access at this point. I have tested by bypassing my template and using Prostar and publishing the module to a blank page and still get the same results. You can check it out here:
golisten.live/fb-events
If you look at the page source you can see that the section is being duplicated (refer to attached screenshot).
So, I have a blank article with the module published to it, currently using a hidden menu item so that nobody sees this test page. Not sure where there is a setting to duplicate the Facebook listing?