There are other unique webpages inside your PrestaShop install that would definitely benefit from helpful URLs: CMS webpages, consumer account internet pages, web pages with immediately generated content.   You specify the main URL because the internet search engine can have difficulty analyzing which one must be the key URL.  https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html