I have been able to request additional categories for my books. The ability has been rescinded.
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Hello,
This is ***** from Amazon KDP, and I hope this message finds you well. Thank you so much for taking the time to send your query to add categories on your eBook and Paperback (ASIN: B0DHT25JWL and B0DHX7JTM5).
We're excited to let you know that you now have more control over your book's visibility! You can select up to three Amazon Store categories for each of your titles during the setup process, based on your primary marketplace. This empowers you to better target your ideal readers.
Given this new flexibility, we've streamlined our process and are
no longer handling individual requests for category additions or updates. However, we're still here to support you! If you encounter any issues with your categories, please don't hesitate to reach out. We're always happy to help troubleshoot and ensure your books are properly categorized.
Want to make changes to your book categories? It's easy! Simply follow the step-by-step instructions on our Help page:
https://kdp.amazon.com/help/topic/G200652170#addWe're committed to making your publishing journey as smooth as possible. If you have any questions or need further assistance, please don't hesitate to contact us. Your success is our priority!
Thanks for using Amazon KDP,
Your feedback helps us improve our service.
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R.C.