Check that you have included schema markup on your web site, Should you be making use of plugins, check which they operate This structured facts tests Resource by schema.org can exam all sorts of schema markups. Merely input a URL or raw code, as well as Software will extract JSON-LD, https://addons.prestashop.com/nl/seo-zoekmachineoptimalisatie-vermelding/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html