6 demo BO, however I couldn't scroll right down to bottom of the side menu to entry the module. This is due to by default the menu won't scroll, so that you can't watch the links in the direction of the bottom. You will find a totally free module accessible to https://www.presta-addons-modules.com/en/front-office/prestashop-seo-webmaster-site-verification-for-search-engines.html