The export log shows a message like this:
Skipping product: 1/0 has no EAN13
In most cases, unless exempted, EAN code is required to export to marketplaces, visit the ticket Prestashop, EAN codes and marketplaces (fr) on our blog about it.
The EAN code field is probably missing for your product, you must fill it in,for example:
You must also fill an EAN code by combination if you use the combinations.
See the page validate your catalog structure to know more about this subject.