" GTM no-script code not found: both missing or not in " I test to add the script inside the header.tpl but there is no part. Update: Difficulty was solved. I just use Yet another addon and personalize hook to make it happen. Thanks Ali Edited November 21, 2018 by https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/30904-automatyczne-tagi-hreflang-i-tagi-kanoniczne-seo.html