My Cloud is a Western Digital product.
As such, your best resource would be their support page(s).
Please see: https://support-en.wd.com/app/products/product-detailweb/p/126
Also, if you have installed any WD software that came with the drive, you might be better served uninstalling that and moving to use iCloud, which is built into the macOS. You have a small allowance of storage available to you to start, and can supplement that with a subscription to additional capacity if you wish.
Please see: iCloud User Guide - Apple Support
Please see: Set up iCloud on your Mac - Apple Support
Utilities that ship with third party drives are unnecessary and tend to cause more trouble with the Mac than they are worth.