My cloud duo - no back up plan

So i spent quite a lot on the duo. And it appears that it won’t support wd back up? So I cannot set up a back up plan. However wd backup seems quite happy to back up to a paid service, Dropbox!
I hope that this is something that can be rectified in the future.

Hi,

WD Backup is meant for specific WD external drives only:

https://support-en.wd.com/app/answers/detail/a_id/6342

https://support-en.wd.com/app/answers/detail/a_id/7839