01-17-2016 23:27
01-17-2016 23:27
01-18-2016 03:03
01-18-2016 03:03
Welcome to the Community @Nehagoenka18! You should start by checking out 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.
Hope this helps. Let me know the outcome.