Google Nest Community

I am using a Pixel phone, is that the issue? My husband used his Galaxy to set up the other two.

My WiFi does say 5 Ghz but we also have the nest mini and doorbell camera and both of those work with our WiFi. Is there a way around this?

Same, new nest audio, shows in my Google Home app, I hit set up but it says it needs to be activated first. I've tried everything I can find online and nothing works. Came here for answers.