In the meanwhile it has the same behaviour showPrices to get a shopper group means that shopper group is in catalog mode. By default you ought to leave this attribute enabled, as disabling it affects the whole inventory management of your store. Only If you don't have any Bodily inventory https://addons.prestashop.com/es/seo-posicionamiento-buscadores/30904-etiquetas-automaticas-hreflang-canonical-etiquetas-seo.html