Rise course sharing issue- Google Cloud

Hi there, I am having problems sharing my first Rise course. I cannot upload to our web page and our Google Drive cannot host it. So followed the video tutorial on using Google Cloud. I exported for web and uploaded it fine, but I cannot share as it as a zip file- see attached? I want to share with clients as the web page/link. Am I missing a step? Hope someone can help. Thanks in advance. 

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