To take a completely different tack…
What are you using the app for?
If it’s purely for accessing your MyCloud within your local network, then, really, it’s not worth the bother; mapping your device into Windows’ file system is by far the better option, allowing all programs (including File Explorer) to treat it like any other directly connected hard disk.
Contrary to what the automated setup and early sections of the manual may suggest, you don’t need to install ANY WD software to setup or use the MyCloud in your local network. Which, given that it’s pretty flaky s/w, is probably a good thing…