I don’t use WD Sync anymore as it caused (or I had) many problems/issues with that software. I use third party sync software instead (Free File Sync).
Typically what WD Sync would/should do is create a Sync folder called “WD Sync” in the User Share (of the user who’s login is used when setting up WD Sync) on my first gen single bay My Cloud.
May or may not help but I did make a post a few years back that discussed how to change the path of WD Sync on Windows at the time. By looking at the WD Sync.config file one can see where the program is syncing from and where it is syncing to on the My Cloud device.
