Here is a similar situation and a reply from WD support:
Nobody here knows the state of your My Cloud Home but you. Nobody here knows whether
- Age and state of the My Cloud Home (MCH)
- Amount of data storage used
- Condition of the hard disk
- Location of your MCH and its access to WD servers
- State of your network and router after power outage
that can all affect the connection and the recovery of your data.
You should try to download the debug_logs.zip from your My Cloud Home. It can sometimes be downloaded even if the white LED is flashing.
Try to file a support ticket with WD Tech support.
Check your access to the WD server and its status which is also dependent on your location.
https://status.mycloud.com/os5.html
