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Hi @Diane11011962, welcome to the Community Forums!
Thanks for bringing this to our attention. To better assist you with this, can you please let me know if the heart rate sensors are flashing or is your device completely unresponsive? If you haven't already done so, I recommend you to check our help article: Why isn't my battery charging on my Fitbit device? and let me know how it goes.
I'll be here if the issue persists.
Best Answer