This was my letter:
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Hello,
You have added, or continued to add inaccurate product information to product detail pages. As a result, you may no longer sell on Amazon.com, and your listings have been removed from our site. To learn more about this policy, search for "Product detail page rules" in Seller Central Help.
Please ship any open orders. If you have funds in your account, they will be available after any amounts paid for A-to-z claims or chargebacks on your orders have been deducted.
We're here to help.
To sell on Amazon.com, send us a plan that explains how you will address this problem. For help creating your plan, search for "Appeal the Removal of Selling Privileges" in Seller Central Help. When you are ready to send us your plan, click the "Appeal" button next to this message on the Performance Notifications page in Seller Central:
https://sellercentral.amazon.com/gp/customer-experience/perf-notifications.html
Once we receive your plan, we will review it and decide whether you may sell on Amazon.com again.
You can view your account performance:
https://sellercentral.amazon.com/performance/dashboard?reftag=email_warn
Alternatively, select Account Health on the home screen of the Amazon Seller app on your iOS or Android device. The Account Health page shows how well your account is performing against the performance metrics and policies required to sell on Amazon.
Amazon.com
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Problem is, I have no idea what the bad info that got me flagged is. Account Health page is at the standard 200 - healthy. I've submitted two appeals (guessing that the issue is with the value "Brand Name", which I had mistakenly set to generic and can't change) but both were denied.
Where can I figure out where I went wrong? Help!