@TomS - I have the exact same issue with 3 Nest Outdoor Cams, after
changing to new wifi with new SSID, there is no way of connecting my
Nest Outdoor Cams, and as you, I experience I can also not connect to
the old router/SSID...the installation proc...
I have the same issue, since changing my wifi, I can no longer connect
my 3 Nest Outdoor Cams, my Indoor Cam connects fine. The 3 outdoor cams
are totally dead!I have the cameraes indoor and next to the router, I
fill in the 6 number code, I sometime...