I finally fixed this by using the home app on my partner's iPhone. Why
the Home app worked on her iPhone and not my OnePlus 9 Android phone is
anyone's business?!
Hi, it's an original Google home.I reset the device and the Home app
detects it but can't connect to it for setting up. Maybe this is
something to do with my 5ghz/2.4ghz router? I will try it again with the
5Ghz network switched off. Thanks