Helpful URLs are for being established while in the configuration web page of every item, group, or static material site. This generation web site is only handy for some automatic webpages, and more often than not you will not have to worry about these.   You specify the main URL https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html