There is no official way to remotely sync or backup the My Cloud to a remote location outside of using the Safepoint option which will backup to local external USB or local network locations. See the following thread where discussion on remote syncing is discussed using certain more expensive My Cloud devices. Backing up remotely would be the same or similar if it can be accomplished.
https://community.wd.com/t/how-to-sync-myclouds-at-different-locations/150933
For the single bay My Cloud devices see the following threads that discuss ways to remote backup content.
https://community.wd.com/t/off-site-backup/149927/2
https://community.wd.com/t/re-enable-remote-drive-mapping-through-mycloud-com/134944
