I have over 10 amazon accounts. And most of them have had this email sent. Healthnut88 has the right lead. I didn't response and did not supply any of the information they asked for, didn't have any negative FB, no returns, no refunds and after the 30 days my funds were availible for disbursement. In one case after 2 wks (and 2 pos. FB) my money was availible.
If you answer all Amazon inquiries with the 3P's (professional, polite and promptly) and have shipped what you sold in condition listed, you will get paid at the end of your review time.