I believe that you must navigate back after you've made the volume change to the recording. Once you select the recording a second time, you will hear the change.
I also seem to recall that you can't even hear the change in volume while you're making the adjustment, which makes it hard to `guess' where the volume really should be.
Maybe Arlo could add a leveler (somehow) to the app to provide consistency, within reason, for recordings that are `all over the place', in terms of level.
[Yeah...as if he doesn't have enough on his plate.]
