" GTM no-script code not found: either missing or not in " I attempt to include the script while in the header.tpl but there is no segment. Update: Challenge was solved. I just use One more addon and customize hook to get it done. Many thanks Ali Edited November 21, https://addons.prestashop.com/en/seo-natural-search-engine-optimization/30904-automatic-hreflang-tags-canonical-tags-all-pages-seo.html