Unexpected Ads Popping Up

Originally, I set up three ad blocks:

1) Before paragraphs 2 and 7
2) End of content [shortcode]
3) Right Sidebar [shorcode]

However, in the last week or so, I’ve noticed unexpected ads popping up (i.e., the header on scroll on mobile, plus 2-3 more ads in the content/in-article area). This occurred without any changes made to the settings.

The page I need help with: [log in to see the link]