@Angely77
According to your post, you have a Google Nest Outdoor Camera with the Google Nest app. This camera does not have a factory reset button; you can only do a factory reset by removing it from the Google Nest app while still connected to your old Wi-Fi network (https://support.google.com/googlenest/answer/9252162?hl=en&sjid=3640628821169526684-NC#zippy=%2Cnest-cam-indoor-and-outdoor) and then reinstalling it.
On some older 1st gen cameras, you can go into the Google Nest app while still on your old Wi-Fi network and update the Wi-Fi setting for the camera (https://support.google.com/googlenest/answer/9223711?hl=en&sjid=3640628821169526684-NC#zippy=%2Cuse-...).
If you were not able to do that, then you may need to wait up to 60 days for your Nest Aware subscription to expire (https://support.google.com/googlenest/answer/9249728).
Since it's not easy to update Wi-Fi settings for Google Nest's cameras and doorbells, their first recommendation is to set the network name (SSID) and password on your new Wi-Fi router/modem to the same values used on your old router/modem (https://support.google.com/googlenest/answer/9223711).
I'm just another Google Nest customer; you could also try contacting Support:
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 page.)
5. Under "Contact options", choose to get a phone call or chat with the team, depending on availability in your country.
