I am having similar issues with this. It won't let me just upload the unzipped file. I have to upload them manually. It's frustrating, because not only did I have to rename a lot of the files that had capital letters, but some of the files were simply too large. The process seems straight forward, even for me, but then it's not.
The documentation provided is limiting. Did you ever find a solution? I have a ticket with support now but decided to look here for additional insights.
It's not that difficult, The first time I did this, it took me about 15 minutes.
Our IT department gave me FTP access to our public facing web server. They also provided me with a FTP client.
I published my Rise course for web, and unzipped the resulting ZIP file to my local computer.
I connected to the FTP server using the client app, and created a folder for my Rise course,
Using the FTP client, I copied all the unzipped folders and files from my local drive to the new folder on the web server.
Used the index.html file to launch the course.
