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Heart rate monitor won't register on Fitbit Blaze

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Starting 2 days ago, my heart rate won't register on my Fitbit Blaze. With it synced to my account, it also won't register my heart rate within the app on my iPhone 12 Pro with iOS 14.7.1. Consequently, on a full charge the battery runs dead in less than 2 hours since it's always attempting to register my heart rate non stop. I've tried resetting it, removing the Blaze and adding it back on to my account, re-syncing, I've tried it on my other wrist all without any help resolving the issue. The green lights are lit up in the back. I've done every troubleshooting recommendation that I can find. I would appreciate your prompt help. Thanks

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Same issue.  Tried turning off and on. Reset and powered down. Checked app and device to make sure that it’s selected to On. 

When I hold it in my hand it seems to work but not on my wrist.  Strange.

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Same. Mine started not getting my heart rate on 9-8. I tried troubleshooting with no luck.  Also, my hours active are different on the watch then on the app. (Not really a huge deal). 

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