@gulson are you using the Extra theme? Do you have ads set up in Theme Options -> Ads?
Based on the HTML (the .et-single-post-ad class), it looks like you do have that set up. Please check this to see if it is what is causing the problem.
Edit: I didn’t know that Divi can also do this. Either way, check your ads settings! 👍
- This reply was modified 3 weeks, 3 days ago by Terry Hale. Reason: added info