My nicely worded 1 star review was rejected by Amazon. That was a few weeks ago however.
I was able to work around all of my doorbell 2 problems by doing 2 things. Reinstalling the app and not enabling the timeline feature solved the volume problem (already posted by another neighbor in this thread). Using a chime pro and connecting the doorbell to the chime pro network resolved the problem of live view sometimes not working - even though my router signal at the doorbell is excellent.