I Really need to suggest towards Prestashop: the shop itself is ok, but very little will work without addons. But these addons are inadequately programmed and if there is a challenge, no one feels responsible! Whenever you’re developing your eCommerce website, It's also possible to check out the free “demo” https://www.presta-addons-modules.com/es/seo/prestashop-gtmetrix-speed-test-api-integration-module.html