Robohelp 2019 and Sharepoint

Has anyone been able to get Robohelp 2019 (Version 14.0.12) to work with Sharepoint? My IT guy and I have spent two head-banging hours using the following instructions - https://helpx.adobe.com/robohelp/using/sharepoint.html - to no avail.

When we get to the part about downloading a project from Sharepoint, all that is downloaded is a .rh folder that contains a single .json file despite the in-application message that displays in RH: Project downloaded successfully.

I am working locally in RH (Win 10, 64 bit) and I access my client's secured Sharepoint site using corporate supplied credentials. I am not on VPN to access Sharepoint.

I have read through previous posts on this and tried to put it all together, but the last round of posts are from 2018 and a much older version of RH 2019, so I am at a loss to determine what is relevant and what is not.

Any and all advice is sincerely appreciated.

Regards,

TVB