@ unkyUb...>>>>>>>>Do you just delete it for the adds to return <<<
Yes......that deletes it from the list of blocked content and allows it to reappear on the site.
When you are still on the "blocked conyent" window, highlight the kitz entry and hit delete......then hit the "close" button on that window. That should take you back to the "preferences" window.....on there, you must click on the "ok" button to make your command stick.
As silversurfer44 saya, a refresh of the page after that may be required.