if google is banning the site this is usually a prelude to them banning you altogether. They won't tell you why they just do it saying your account may be a threat, not that it was a threat only that it posed a potential risk that they can't tell you about because it is proprietary. I have seen this happen on many, many sites, some of them were big names and very popular popular (10k+ daily hits). Look around at the big name blogging sites that used to carry or promote google but are now with much lower paying companies.

If your ads don't show, I would be concerned and immediate remove the scripts from that site.