TBH having read some of your previous posts, you've done well to last this long, which is a shame cos I reckon you're a top bloke (and a Gooner)
Also it doesn't say anything about appealing. Have you had to cancel orders through lack of stock or posted late ??
If you're selling lots, Amazon may just want to check that you are dispatching stuff. It may be a velocity review, but at least they haven't frozen your funds entirely.