06-25-2016 20:44
06-25-2016 20:44
06-27-2016 04:20
06-27-2016 04:20
Welcome to the Community @Bcomp! You should give a try to these syncing troubleshoots. Make sure that there isn't another bluetooth device that may be creating interference during the process. Setting up your tracker as a new device may also help you to bring it back to sync as usual. Also, make sure that your mobile device is running the latest version of the Fitbit app for iOs.
Hope this helps. Let me know the outcome.