I also just experienced this problem. I was for some reason able to
resolve it by going into the camera settings and reducing the video
quality and also stopping and restarting the camera in the app. I am
using gigabit fiber internet on a WiFi 6 mesh...
what device are you having issues with? the previous nest hello or the
new battery one? If it is the previous hello I found that going to
home.nest.com and logging in and reviewing footage there was a bit more
user friendly than the app.
One method is to go to the Google store and if you are logged in you can
select your account on the top right then select subscriptions. You
should be able to set something up there. Also home.nest.com and set
something up through that.