Update: I was able to delete our former home (I had tried before, but it
failed to delete), and I have now been able to re-join the device to my
account. All good here.
I'm having the same exact issue. Went from Eero Wifi that kept
disconnecting us to Spectrum's Modem + Router. Have reset the device 3x,
but same message. When I hold finger down on tile, it just takes me to
screen to pick location. No "Settings" link...