We can view camera feeds for our older Google Nest cameras and doorbells (those accessible in the Google Nest app) on the home.nest.com website, but NOT camera feeds for our newer Google Nest cameras and doorbells introduced starting in 2021 (which are accessible only in the Google Home app).
Google's explanation for this--and customer reactions--can be found in this blog on this forum:
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.