Welcoming URLs are to get set during the configuration website page of each solution, group, or static articles web site. This development website page is just helpful for some automatic web pages, and most of the time you will not have to worry about these. By default, PrestaShop's deep URLs https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html