I figured something out today when i decided to use cloudflare to help my site perform better but on doing so my ads stop appearing properly and i wondered with might happened to my ads which i later figured out and i will be sharing to you how i was able to fix the problem.
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It's obvious that some cloudflare features are not compatible with Adsense that is why your ads stopped showing though The basic CloudFlare setup according to cloudflare will not impact Google AdSense at all. CloudFlare does have a beta feature called Rocket Loader that may break Javascript on some sites, so you should turn Rocket Loader off if you see an issue with the JavaScript or a dramatic change in AdSense numbers.

Now what cause my adsense not to show is cloudflare feature called Rocket Loader which you must turn off or set on manual if you are having problem with some javascript on your site.

The truth is that Cloudflare Rocket loader makes your site load faster and if you don't encounter any problem using it then feel free to keep it on.

The option to change cloudflare Rocket loader can be found in Cloudflare dashboard-Speed