Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Hello @Bedlington, I hope you're having a great day, it's nice to see you around. 
The situation you're describing is very odd, which tracker are you currently using? Have you tried to restart it yet? If so, I would like to recommend using your tracker on the opposite hand and monitor your sleep for the next few days.
If you're still experiencing the same situation when switching hands, please feel free to reply, I'll be happy to continue helping you. 
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Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Hello @Bedlington, thanks for taking the time to reply, I hope the recommendations provided will be helpful for you. Please keep me updated and in case you need anything else, feel free to reply.
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