In WD2go.com website

For the users that registered to the MyBookLive device as the remote access with their email, but oneday they cannot access to the registered device with some reasons like:  device was full or quick factory restore (and users forgot to unregister the email from the remote access)

The device that restored will show off-line in the device page and users cannot do anything with it.

At least, user should able remove the device they sure they don't need forever.  Why they will need to see the device they cannot use.  Else, the error device will be shown in the device list as the monument of the memorial that users can do by just looking at it.