What should I do if chapters are detected incorrectly?

If your book is in the writer, its chapters are the ones in the writer's chapter list. Fix them there, then press Update in the formatter. See How does the writer work?

If your book came from a Word file, missing, merged, or misplaced chapters are almost always a heading issue in the file:

• Chapters missing / all one long chapter: your titles probably aren't using a Heading style. Apply Heading 1 to each chapter title in Word and bring the file in again.
• Too many chapter breaks: something other than chapter titles (a subheading, or scene labels) is styled as Heading 1. Reserve Heading 1 for chapter titles and use Heading 2 for anything below that.
• A stray break mid-chapter: check for a leftover Word page break or a mis-styled line.

Within the formatter you can also review and adjust where chapters start before exporting. Fix the headings in the DOCX for the cleanest result, then bring the file in again. See How does the formatter identify chapters?