Hallo, in prestashop module is system for uload all products for Amazon, for ex.: products in category Computers, IT... and you CAN'T upload this product without EAN or ASIN, if your product in category Collectibles, Jewelry, Beauty, Personal Care its only accepted without any code. In our system for Prestashop we use some script for generate fake ean code before upload. So you have 2 ways: search ASIN for all your product manuals from Amazon or generate fake ean code. If you sale on amazon not jewelerly o personal care product I don't think what only block ean request in module is resolved you problem. Thanks