Homey 2016-2019 models need a (very) oldskool 2.4GHz wifi to connect and stay connected.
When I’m right, exactly Google has just one of the few systems which doesn’t have a setting to split Wifi into 2.4GHz and 5 GHz…
However, mr. Workaround has this fix:
you can get your old router/modem off of the shelf, turn it into an A.P., and create a 2.4GHz SSID to have Homey connect with it.
Pro 2016-2019 models’ wifi implementation is so very picky, there’s a complete how-to here:
Yea here as well. I think it’s just the speaker saying ‘pop’ when the unit is powered on or off.