Smartware doesn’t allow for remote backups from the computer to the My Cloud. WD Sync is for syncing the contents of a computer’s folder to the My Cloud, not from one My Cloud to another. The Safepoint backup option of the My Cloud is for backing up the My Cloud to either a USB drive or to another location on the local network.
There are ways to enable remote backup of the My Cloud (using rsync) but it would involve some work on the users part. See the following threads:
https://community.wd.com/t/success-3-rsync-backup-between-my-cloud-devices/93945
https://community.wd.com/t/back-up-to-a-different-physical-location/92478
https://community.wd.com/t/script-to-copy-files-between-myclouds-on-different-lans/95585
https://community.wd.com/t/how-to-sync-two-mycloud-at-different-locations/145528
