I apologize for my late response and thank you for all of your patience while waiting for a reply. I definitely understand how frustrating your situation must be, and I wanted to make sure that your concern was acknowledged. Do you still need help with this issue? I know that there's been a delay in response since you posted.
Thanks for visiting the Google Nest Community.
Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.
Check out this link for a complete guide on how to set up and manage your camera from the Google Home app.
If you have additional questions, feel free to submit another post and provide as many details as possible so that others can lend a hand.
Hope this helps!