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Hello @SunsetRunner, thanks for joining us, it's great to have you on board. 
Have you tried restarting your tracker lately? If so, I would like to suggest the following:
- Restart your phone
- Turn off Bluetooth on your phone, wait for 15 seconds and then turn it back on.
- Try to set up your tracker as a new device. Don't worry, this won't remove any information stored in your account so far.
- Go to the Bluetooth settings on your phone and check if your tracker is on the list of paired devices, if it is, tap on it and select Forget this Device.
- Open the Fitbit app and tap on the Account tab at the bottom of the screen, then tap on "Set up a New Device"
- Choose your tracker and follow the onscreen instructions to continue
- When the app asks you to replace your current tracker, please replace it and continue with the process.
I hope this can be helpful, give it a try and keep me posted! 
Best Answer