I sold my site a few months ago to a guy who wanted it for adsense. i had adsense when i sold it to him. I think for some reason he didn't remove all of my pub ids form the pages. I have not used adsense since then. I got banned.
i think he had a script which removed my pub id and replaced it with his. I think the problem is that there are pages indexed by google which his script did not find. Just a few days ago i logged into adsense and saw some income. I also noticed a really high ctr like 120%. I hope i m not screwed.
Use allowed URLs next time. You can set it so only allowed Domains can show your ID and receive valid clicks.
I feel that you have a perfectly valid reason, just state the truth to google adsense, I am sure (I hope) that they are reasonable people
Basically you are, now don't waste any more time waiting and contact them asap and tell them the whole story.
The only solution is to contact adsense support team for this. You can provide your sales invoice/receipt as evidence.
You should send too to Adsense the pub ID of the new owner of the site. (You can get it using "view source" on any page with Adsense ads).