Thank you so much. This method finally worked! I am grateful and I hope my 2014 model Fitbit One will continue to sync. It is only recently that it has stopped syncing and even the representative from Fitbit could not figure out what was going wrong. Again, thank you!
And a brief update to this earlier post -- my Fitbit One automatically synced the first time but since then I have to manually sync it so that is a bit annoying. This was never the case (since 2014). I'm assuming this is a software issue. My firmware is up-to-date.
Yet another update 11/29/19: Still communicating with Fitbit about this issue -- still no solution other than they now want me to reinstall Fitbit connect -- I do not see the point in doing this since I can manually sync my Fitbit One and automatically sync my Aria scale, and I can do this with or without the dongle connected to my iMac (which is a 2019 model with Catalina OS) so the computer is seeing both devices, which to me means that bluetooth is working. I have come to the conclusion that the problem started when I did the last firmware update (i.e. the most recent update a few weeks ago). So for now, at least, I can manually sync my Fitbit One but it will no longer auto-sync to my iMac and since this is where I log my diet data every day this is a bit of a pain but not doable. From what the support group at Fitbit said, the app no longer auto-syncs to my iMac. It is auto-syncing (i.e. 'all day syncing' to my iPhone 10 Fitbit app. So that leads me to believe that whatever changed on the last firmware update for the Fitbit One has something to do with it not auto-syncing my data when I'm within 20 feet of my computer. It has always done this since I purchased the device back in the spring of 2014 so, really, I would have to say that the firmware update changed something. Maybe Fitbit can change this back???
