Markup is usually conveniently checked by means of schema markup testing Software. It will require some time for rich snippets to look in search results, in order that they may not be exhibited promptly. Even so, product and category rich snippets will surface only immediately after Google indexes the articles. https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/31857-automatyczne-google-rich-snippets-json-ld-opengraph-seo.html