I already explained that the best way, IMHO, to get some ad revenue from your site was to manage and sell yourself your ad space.
Nevertheless, I was still giving one last opportunity to Amazon ads, showing them in the modeling portal (bottom left column). But not anymore, making me 1-2 USD per month does not justify cluttering the portal home page. So, bye bye amazon. It was good meeting you even if I never got paid (after 2 years I haven’t reached the minimum to get paid!!).
(yes, you can say that having them in that position was not favoring people to see and click on them but I already tested other locations)