Trouble with factory reset on ReadyNAS duo v2

Hi,

Please help... I'm having trouble resetting it to factory settings; I have followed the reset procedure in Para 3 of the instructions here (http://www.downloads.netgear.com/files/GDC/RND2110/Duov1_NV+v1_HW_en_06Dec11.pdf), but the disk lights didn't flash at all (instructions state once at approx 5 secs and again at 25 secs). The NAS doesn't now appear on RAIDar.

Background:

I've not used my ReadyNAS Duo v2 (contains 2 x 2TB Seagate Barracuda Green) in a couple of years and am trying to set it up as a backup for my iMac (27" running Catalina 10.15.4). I initially plugged the Duo into my router and it was visible to RAIDar, but I couldn't recall the password - I had set up a password recovery question, and it accepted my email and answer, said that a new password had been emailled to me but nothing came through (checked junk/spam filters etc.). After trying a few times, and not being fussed about the backups previously on there, I tried the reset process and encountered the problem described above.

Anyone else encountered similar, or can offer any advice?

Thanks in advance,

Dave