My 645M is syncing to the Garmin connect app for activity tracking such as going for a run (initiate start of run etc) but the day to day steps, stairs, sleep etc will not upload into the app from the watch, it is just holding the data in the watch. We have tried re-syncing with the app, and disconnecting and then reconnecting the watch but still no data transfer. Any ideas on why or how to do this? thanks