No idea how to get adsense to work again

Somewhere along the way adsense decided to stop showing ads on this blog, and I have no idea how to solve this. I've tried to contact them many times but there is no reply. Except a notice that this blog is not suitable for ads, though it has been using adsense for many years before.

Somewhere along the way they changed the rules and I am unable to gather what's the change that caused this and have no way to get any help on this by any form of support. =(