Hello,
1/ Please try to disable all the third-party plugins (including cache plugins), that do not come bundled with XStore https://xstore.helpscoutdocs.com/article/36-included-plugins , clear the cache of the browser, and check then. Maybe one of the additional plugins is the reason for the problem. 2/ https://prnt.sc/uM4IRZ6ano4B and https://prnt.sc/jP5pN-69si2K find more – https://codecanyon.net/item/woocommerce-amazon-affiliates-wordpress-plugin/3057503/comments?term=Error+trying+to+add+product+to+database&from_buyers_and_authors_only=0&order_by=relevance
Regards
