Weirdly enough it's working just fine today.You could be being blocked by some kind of tracking/ad protection so you could either turn it off, add an exception for this site url or use a different addon.
Reports about bad ads should include the following:
1. Location/Country
2. Device
3. Browser
4. Company/Product of ad
5. A screenshot if possible
6. Brief description of how the ad is a problem
7. Page/Pages affected8. Date and time of occurrence
Refer to the instructions for your device on how to take screenshots