Why is my book name limited only to 10 characters?

The Book Name configured on the book settings window is only a reference to identify different photo books you may have in this program.

This Book Name will not be printed anywhere on your book, it is not the book title.

You can have the book title printed on the title page for a 12" x 9" die cut hard cover photo book, or create a complete custom book title page for a 9" x 9" photo book.