Exporting to Epub 3

How is everyone doing?
When I export my book to Epub 3 It is missing chapters. Is anyone having this issue as well?
Thank you very much!


Did you have selected all the chapters for exporting?

Captura de pantalla 2019-12-23 a las 23.04.28

Hi Colomet,
Yes I did but It is still missing chapters on Epub 3 export.
On Epub 2 export page numbers sometimes are over the edge of text.