My cloud Mirror Gen 2 dreaded FF:FF:FF:FF:FF:FF

I haven’t used my My Cloud Mirror for maybe 2 years, in which time I have all new routers and networks. When I put the Mirror on the network, I cannot reach it. I do see it from a Mac on the same network when typing arp -a into Terminal, but the Mac address is listed as FF:FF:FF:FF:FF:FF and ip address is I don’t recall if I had once assigned a fixed ip address to the mirror, but it is possible.

Based on some research I’ve tried both 4 second and 40 second resets. All lights are blue but cannot connect over the network.

I then connected by Ethernet directly to the Mac Pro. Same issue with Mac address and ip address. I can see it listed in the finder as a shared device but cannot access it.

I don’t care about info on the device so I’m happy to reset the whole thing, just hoping I can get it working again. Can anyone lead me to specific recommendations on how to fix this? Thanks.