The most recent Model of PrestaShop one.7 generates de URLs without the ID number. In case you’ve got an older Model, we recommend you update it or Make sure you eliminate these ID figures from the URLs. Placement of hreflang and canonical tags is very important to ensure their success. https://addons.prestashop.com/en/seo-natural-search-engine-optimization/30904-automatic-hreflang-tags-canonical-tags-all-pages-seo.html