In additon to elisolution's solution higher than, this also checks whether we are literally on the house web page (not simply whether or not the canonical was established or not). I tested this Option a little and so far as I am able to see, it really works as expected. Normally, https://addons.prestashop.com/es/seo-posicionamiento-buscadores/31857-google-rich-snippets-automatico-json-ld-opengraph-seo.html