Be aware that In case your store has now been indexed by Google or some other internet search engine, it would just take a while on your improvements to appear inside the search results... You could have to Wait and see!   You specify the principal URL since the online https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html