01-15-2016 21:56
01-15-2016 21:56
01-16-2016 04:08
01-16-2016 04:08
Welcome to the Fitbit Forums @Siobhon! A good start would be checking out if the device you're using for the setup process is listed in the compatible devices. Make sure that there isn't another Bluetooth device that may be creating interference during the process. Setting up your tracker using a PC may also help you with this matter.
Hope this helps. Let me know the outcome.