home app not working with macOS Monterey update 12.6.6

If you upgraded the home architecture, any device not capable of running the current version of iOS, iPadOS, or macOS will not be able to see or control the home

KiltedTim is correct. Home now requires Ventura. (had to look it up)

Is this what you're seeing because I see it too.

You're welcome.

Same here

yes

I can not use Home Design Studio 15 after upgrade to macOS Monterey. Is there any solution?