Adsense not showing on live site, but shows in editor?

Greetings everyone,

on some of my websites (18+!!) adsense shows fine in the editor. But doesn’t show on the live site.

The code is nicely shown in the source of the pages, but for some reason it wont show the ad on a live site

The website i’m talking about:

https://www.massageadres.nl/

I’m not a tech person, i bought this website and made a widget for the ad code which shows empty on the live site for some reason. Tryed IE 7 and chrome, both blank ??

Funny enough, tools.pingdom.com shows the ad in its preview image, so there’s a very strange problem happenin.

(no i dont use ad blocking software :P)

Any help is greatly appreciated!