When I import my BookyAI Word (DOCX) file into Kindle Create, the "Suggested Chapter Titles" window lists my book title, the subtitle, my author name and "Table of Contents" as chapters. How do I stop that?

Update to BookyAI version 1.9.11 or later and export the DOCX again. Kindle Create does not read Word's heading styles; it scores every short, centred line that is larger than the body text as a possible chapter title, which is why the title page lines and the Contents heading were offered. Since 1.9.11 the title page is written as one block (title, subtitle, a small ornament and the author name) and the Contents heading is set at body size, so Kindle Create no longer offers them. After importing the new file, the list contains only your chapters and your front and back matter sections (Introduction, Glossary and so on). This was verified with Kindle Create 1.114.