questions about krpano License

I
want to use krpano to develop my panorama viewer and embed the viewer in my
website. Other people can visit my website and view panorama video by the
viewer. Which license should I buy? If I buy “krpano License” and “krpano
Branding Free License”, is this enough? I have read the page https://krpano.com/buy/license/, the
item 8 says “Offering your licensed krpano version to
third parties on a hosting platform is not allowed without 'krpano Hosting
License'.”, but I can not find “krpano
Hosting License” at buy list page. If I want to embed
panorama viewer in website on one third parties hosting platform, do I need to
buy “krpano Hosting License” ?If I need
to buy, where can I buy it?