I Really have to recommend from Prestashop: the store alone is Okay, but nothing operates without addons. But these addons are badly programmed and if there is a difficulty, no one feels accountable! There are many CDN providers, Cloudflare is a good and free one. You should use as well https://addons.prestashop.com/en/seo-natural-search-engine-optimization/32754-seo-open-graph-twitter-card-tags-automatic-generator.html