Note that if your shop has by now been indexed by Google or any other search engine, it might take some time for your personal modifications to seem within the search results... You could have to be patient! The name of the store by itself is ready in the course https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html