Since you indicated you did a “clean install” of Windows 10, make sure to update Windows 10 with all the latest Microsoft updates. Microsoft introduced a bug last November that caused problems viewing NAS drives like the My Cloud in Windows File Explorer. Microsoft fixed this issue with their March update. See the following link for more information and workarounds when using Windows 10.
https://community.wd.com/t/compilation-of-windows-10-methods-steps-and-solutions/142576
