@Monica4
If your camera has NOT been "factory reset" you'll get a green status light instead of a blue status light. Are you certain the "factory reset" completed?
Your post references the Google Home app, so it seems you have a 2nd gen camera, so the "factory reset" (not "restart") would go like this:
1. Locate the reset hole. [Location depends on camera.]
2. Insert a paper clip, thumbtack or similar into the hole. Press and hold down.
* At 10 seconds, the status light will blink yellow four times, and you’ll hear a countdown tone.
* At 12 seconds, the status light will be solid yellow. When the camera begins resetting, you’ll hear a confirmation tone.
3. Release the button. Your camera will restore to its factory settings.
4. After the factory reset, your camera will appear as “Offline” in the app until you remove it.
https://support.google.com/googlenest/answer/9252162
