I’m having same issue. I have 1 WD My Cloud EX2 and wanted to backup data from it to my New WD My Cloud.
What really makes me thinking it should work is the fact that from my EX2, the remote backup configuration interface offers a selection (scroll list) of remote server type (“NAS” or “My Cloud”). Selecting “My Cloud”, I’m able from this EX2 interface to type my email account and password which is allowed to access my WD My Cloud.Then I can select my WD My Cloud as destination server from this remote backup interface.
Then I do continue the configuration which requires multiple data including SSH password, but also a previous password that seems to be one to authenticate on the WD My Cloud. Here is where it fails. I have tried to fill this field with all password (one after the other one) I know from this WD My Cloud, but without success.
If the EX2 Backup configuration interface is built in a way to select a “My Cloud” as destination server, I can’t understand/hear it isn’t compatible/built in this aim.
By the way, to avoid I’m bad @ understanding what is needed to be configured, I’ve tryed the opposite with sucess : Bakup from WD My Cloud to WD My Cloud EX2.
I REALLY hope someone will reply hepling on this.