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