Hi, I'm not sure if this is an issue with the fitbit API (I've been having some trouble with it on something else I'm working on also!) but the API call to get data is is coming back unsuccessful, saying that the refresh token is invalid?
Re-authorizing via setupAccess.py will fix the issue, and it'll run just fine for a couple of days, but then it fails out again -- it's almost as if the module isn't storing a refresh token at some point.