Shopify Schema Markup for Testimonials Widget is usually really complicated (mainly because it is determined by the evaluate applications that you are using), I like to recommend you allow it to the industry experts.  Check out Schema.org and come across the precise sort of microdata formats you’d like to use. https://www.presta-addons-modules.com/en/administration/prestashop-ban-ip-address-and-geolocation-redirect-visitor-country.html