Shopify Schema Markup for Opinions Widget can be very complicated (because it is dependent upon the review applications that you are using), I like to recommend you permit it towards the authorities.  Please check the demo instance beneath, the place the module is set up and configured in debug manner. https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-google-rich-snippets-json-ld-opengraph-twitter-tags-schemaorg.html