Notice that if your retail store has currently been indexed by Google or any other internet search engine, it'd get some time on your variations to look in the search engine results... You may have to be patient! The title of the store by itself is ready through the set https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html