Hmm weird. I have zero issues with my hub max, all things works as it
should and I have a lot of google home equipment at my house. Do you use
the qr code for the camera?
After you have deleted the hub max from your current home, you have to
wait a day before adding it again. Remember also the wifi connection,
your phone/tablet and the hub max needs to be on the same wifi, either
2.4ghz or 5ghz.
It depends on which cams it is. I have four first gens and I can't do it
either on my pixel 9 pro or ipad pro, so it ain't the Google home app on
your things.