Display Storyline on Sharepoint Site

This thread seems more active than the stale one I posted in earlier so sorry if this is a repetitive. Thanks to everyone who has contributed to this enduring post. I am trying to embed a storyline 360 file into a sharepoint O365 (online) team site. We are on Windows 10 and use the current IE browser. I have sifted through the recommendations and have done the following to successfully be able to see the story.aspx on my browser:

1. Published to web
2. Renamed all .html extensions to .aspx
3. Loaded all the files from the published package to sharepoint document library using explorer. All files are checked in. All intended test users have access to both the document library where the content is saved in sharepoint and to the page where the file is embedded
4. I created a wiki page in sharepoint and embedded the <iframe> code to link to the story.aspx file.

I can view the file without any challenges. My test users only see the round loading wheel and the content never loads. 

I think I have read all of the sharepoint related discussion threads and I have not seen this as a reported issue.  Has anyone encountered this? More importantly...does anyone know how to fix this so my users can also see the file?