I have a blackvue 750 and a first gen pixel and what i noticed is that after connecting to wifi i got that "this network is not connected to the internet" warning, and the trick was to click on that and say 'OK' then it would actually use the wifi for the blackvue app. Now I noticed that I have to turn off mobile data and then it will connect to the app through wifi. It really doesn't like to use the wifi network if it can't get out to the internet, atleast on the first gen pixel/