Upgraded Router and Modem

[ChristieMarin]

Hello, 

We upgraded router and modem yesterday.  New WiFi information and password came with new equipment.  Of course it messed every Google Nest item up in the house and outside.  All cameras, speakers, thermostat, doorbell, you name it.  My husband and I both saw on sites to remove the device from Google Home app.  That is what we did.  That was a screw up.  Now even with QR codes and serial number it doesn't recognize the product.  Somehow it is still on the old Wifi information even though it doesn't exist and it has been removed from Google Home.  Also, we have factory reset some of the devices and still no luck.  This has been a complete nightmare.  Any ideas. Need help please.  

Thank you

[MplsCustomer]

@ChristieMarin 

Perhaps you should contact Support so that you can walk through the specifics of what steps you've taken and where things are at right now:

1. Go to https://support.google.com/googlenest/gethelp.
2. Select a category/product family, and type in a brief description of the issue, then click "Next".
3. Click "Other", then click "Next step".
4. Under "Resources", just click "Next step". (Clicking one of the listed links will bring up a Help page.)
5. Under "Contact options", choose to get a phone call or chat with the team, depending on availability in your country.