A few months ago there was a thread on this topic about people getting "warning letters". At that time I had been sent one from Google also. The warnings were related to old campaigns (that were not running) where Google did not like the landing pages. These are very old campaigns that are not running, and dated back to my early days learning PPC. Looking back I know the cheezy sales pages are what Google didn't like.
I explained this to Google in reply to the warning and they basically sent me back a reply saying, "OK - just don't advertise any pages like that in the future".
And I didn't. I had moved onto better programs and my own products.
Anyway, all of my campaigns were very clean. Mostly I was sending traffic in the parenting niche to my own website with straightforward language.
Other traffic was being sent to affiliate sites or pre-sell pages that have always resulted in decent landing page quality scores. Again, nothing in any market that Google would frown upon. As evidence, none of this was part of their original warning. They were totally fine with my reply regarding this early warning and I thought the case was closed.
So now I'm officially banned. I thought that was for "bad guys". Guess not.
I contacted them through their Adwords "contact us" page. I have no idea if they will bother to reply or if the reply will be helpful at all. No idea at all.
I am mad because there is nothing in my account I'd feel ashamed to explain to my Mom (the "Mom test" is always a good one). But I can't let it get me down because there are FAR more ways to get traffic than Google PPC.
I have no idea if this thread will help anyone else - I hope so, just to show you that you can't trust Google and you can't rely on them to allow you to advertise in their system with unclear (and evidently inconsistent) rules.
Believe me, I've read their rules about landing pages. I have checked and rechecked them to make sure I'm above board. I am. Apparently they could care less.
(ok, end of rant - off to build revenue other ways)