Hi @Christine54. Welcome to the community.
Thank you for sharing the inquiry regarding your Charge 4.
If you haven't done so already, please try the following steps that have been useful for other users:
- Force quit the Fitbit app.
- Turn Bluetooth off and on.
- Open the Fitbit app and sync again
In addition, I recommend that you try restarting the device as suggested in this article.
If you're still having any issues, let me know if you already tried all the steps listed here to resolve syncing problems, and make sure to check the compatibility requirements listed here and to keep the Fitbit app updated to the latest version available.
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