The markup helper will produce the schema markup code. Duplicate the code and insert it to the head section of the web page to include structured data. I don't Assume This can be an issue with markup Until there is something instrinsically Completely wrong with JSON+LD formatted rich snippets (versus https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/31857-automatyczne-google-rich-snippets-json-ld-opengraph-seo.html