well, here’s another interesting aspect to the whole problem. Turns out, the leaderboard ad displays on all my category page headers and the plain old post page headers. It’s just the main/home page where there is a problem.
google adsense code came from google adsense itself. WHen generating the ad code, I chose to make it so it could work on responsive screens. I’ve not made any modifications to it.
What is wrong with my main/home page in chrome? Have I maxed this page out on google ad sense code or something by testing it over and over and over again??