Why are AdSense Ads Showing on Half the Time?

[HPad]

Starting in Nov 2018 my rev droped hugely. As in several hundred. It has yet to recover and has gotten worse.

Both of my major sites have issues with ads not appearing random. Sometimes they do a lot of times they don't not sure how this is on the end user but doing this on muti devices and connections I experience the same so I assume its happening to my normal visitors as well..

The spacing there should be 2 ads top & bottom and link ad and NONE of them showing. Sometimes 1 will show or none will show.

Adsense account shows no issues etc.

[edited by: martinibuster at 8:32 pm (utc) on Jan 30, 2019]
[edit reason] Words are adequate in this case. [/edit]

[martinibuster]

It could be there's another JS that's interfering with the AdSense. Try moving one of the third party JavaScript files to the bottom of the code if possible. I've seen this happen with a social sharing script, but it could be any other third party script or even something served within your site.

Another reason is if you're using ad units with the same dimensions. This sometimes can cause issues with showing ads correctly.

[JS_Harris]

Check the behavior in several browsers and if you run one don't forget to turn off your ad blocker too.