Welcome to the Fitbit community, @Bri1986!
Sad to hear that you're having issues with your Charge 5 not tracking your heart rate. As there are many things that could affect accurate reading of your heart rate and SPO2, I'd suggest checking this article for any possible solution:
How do I track heart rate with my Fitbit device?
You could also try to restart your device following these instructions:
1.) Connect your Charge 5 to the charging cable which has to be connected to a power source.
2.) Press the button located on the USB plug of the charger 3 times within 8 seconds, holding each press for about 1 second.
3.) Wait 10 seconds or until the Fitbit logo appears.
I'll keep my fingers crossed.
Stefan
Charge, Charge HR, Blaze, Versa, Versa 2, Charge 5, Charge 6, Versa 4, Aria, Aria 2, Pixel 4a, Pixel 7
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