Shopify Schema Markup for Evaluations Widget is often quite challenging (since it will depend on the review apps that you're using), I recommend you leave it on the industry experts.  Please check the demo instance below, where the module is set up and configured in debug mode. It truly is https://ledbookmark.com/story5162301/a-secret-weapon-for-prestashop-popup-on-exit-page-on-browser-tab-close-event