Do you already have the Google Hub Max camera viewable as a camera at
home.nest.com?
We have not tested the hub max camera at all, but in theory if you get it viewable as a camera at
home.nest.com, it might be possible to add it as if it were a nest camera. If you have it viewable at
home.nest.com, let us know and we'll send you some instructions to try.
Re: Older alerts ... We'll soon have a global alert view, allowing you to view snapshots from all alerts in one place and browse through them. This is coming in about a week, and I think it will solve your issue, but if it does not let us know what is still missing.