MyBookWorld 1TB Not on network/discovery/ip

Hello,
Thanks for getting back to me.
Unfortunately the link you provided was no good.
The trouble appears to be with the device rather than my network.
Sometimes the drive boots up normally (as indicated by the lights), gets an IP address assigned, but can’t be mapped or accessed via its ip address (XML error detailed above)
Sometimes it appears to boot normally but never gets an IP address.
Sometimes no lights appear on the Ethernet port on the device.
Sometimes it fails to boot and shuts itself down immediately.
I have tried connecting to a different router/network and still the same issue occurs.

The most common sequence it seems, is normal boot up, normal lights on the Ethernet port, no IP address assigned, lights on Ethernet port go out after a few mins.

Some posts I have read suggest that the twonky may need resetting? But I don’t understand enough to be able to tinker in Linux to fix it.

Any other ideas?
Thanks again for trying to help.