That suggests that the network hardware is working.
I think we’ve probably run out of things you can do externally. So, if you are absolutely sure WD won’t honour the warranty (not really sure why it should not be a global warranty), then I’m afraid dismantling and testing the HDD in a PC or USB caddy.
If the disk is working, then it will be worth trying the ‘unbrick’ guides; re-install the firmware by directly writing to the disk.
