" GTM no-script code not found: both missing or not in " I consider to incorporate the script while in the header.tpl but there is no part. Update: Issue was solved. I just use An additional addon and personalize hook to get it done. Thanks Ali Edited November 21, 2018 https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/30904-automatyczne-tagi-hreflang-i-tagi-kanoniczne-seo.html