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@Lisa7150 Welcome to the Fitbit community.
This issue does seem to happen between different devices but you should check the Charge 5 area of the community.
Best AnswerI am having the same issue with my skin temperature and other metrics (the breathing rate and the heart rate variability). Also my sleep time is not being registered properly. I got this Fitbit from the "All Of Us" Wearable Study research. It came from them/you and it's not working right so that means the research I'm trying to provide isn't there. It's very frustrating.
Best Answer