If you're publishing a paperback or hardcover book, you will need to enter your print choices ahead of previewing. To learn more, visit out Print Possibilities aid web page. KDP’s book setup causes it to be uncomplicated that you should add, enter, and modify your book in advance of publishing. https://amazonkindleselfpublish.food.blog/2024/09/28/creating-a-masterpiece-for-readers-through-the-art-of-book-formatting-and-layout/