I know this has been asked before but the solution is not working!

My partner keeps on unplugging a Play:1 speaker used as a surround speaker. Eventually it got so out of date I ended up factory resetting it. That was my mistake. After play:1 updated, when I tried to add it back into the system I got the response “Play:1 Not registered"

I repeatedly tried to register it, responded to the tones but got no further. I reset it again, connected via Ethernet but still ended up  “Play:1 Not registered"

Tried calling UK help but got message “wait time 180 minutes”, tried live chat but no one available.

What else can I do?

sonos app version S2 80.00.02