MyBookWorld WhiteLight connection to OS X El Capitan / High Sierra fails

Hi,
I have a WD-MyBookWorld that I use as a backup for my iMac (under OS X El Capitan up to today, and fails under HighSierra, too).
I can connect to it through smb:// and via ssh
I see it in TimeMachine and listed under the bonjour shares, but the connection fails.
Through the web interface I checked that the firmware is the latest.

Any help is appreciated

Hello

Maybe you should try contacting WD’s Technical Support about this.

To Contact WD for Technical Support

The link below will allow you to call support: