Issues with Adsense policy on Nav pages

Hi team,

During the whole lasts month and half we've had serious problems with adsense, in a nutshell they do not want us to place ads on the navigation pages, that is, on the main pages and on the page once you enter the subforums.

We've had ads on those pages for over ten years, same places and it's never been a problem, we try to keep our site as clean as possible. Now all of a sudden it's wrong. His explanation is that there are more ads in there than content. Have this ever happened to any of you? Any ideas on how to circumnavigate this problem? I can only have ads within the threads and as you know the main pages are very important in terms of revenues. I'm leaving our site link so you can take a better look.

Thank you very much.