Incorrect canonical implementation: Make sure the canonical URL is proper and doesn't conflict with hreflang directives. When a customer add multiple products and solutions to the cart and then Visit the Check out Cart section, the info layer displays the small print in the products in the purchasing cart. Pro-Idea: https://addons.prestashop.com/en/seo-natural-search-engine-optimization/30904-automatic-hreflang-tags-canonical-tags-all-pages-seo.html