Nest with floodlight can't be found

[Pennwood]

Bought a NCwF and it worked fine for a while, but had to change wifi network quite suddenly when our old router died.

Now I cant get the cam back. Power is working, motion detection is working, but it's telling me to make sure its connected to the same WiFi as my phone when trying to add it.

Steps ive tried:

• Tried QR and Code. It's a good 4m off the ground so code is preferable anyway.
• Tried factory resetting a few times now
• Tried moving mesh system nearer using a long cable

Anyone any ideas? At the moment it's just an expensive floodlight!

[mdr2]

Uggg, changing WIFI for Nest cams has been a big pain for years.  There are literally 100's of posts about here on this form.   Read thru this and see if this helps .....

https://www.googlenestcommunity.com/t5/Cameras-and-Doorbells/How-to-Change-camera-or-doorbell-Wi-Fi-...