Light Sensor heart rate is not turning on

[Mayameleniaf]

This morning I turned it on and there was no sensor as usual. I have tried to reset and change the clock but it doesn't work on my Versa 4. I am very confused.

[MarreFitbit]

Hi there, @Mayameleniaf. Welcome to the Fitbit Community Forums. Thanks for bringing this to my attention and for the troubleshooting steps you've tried. I'm sorry to hear that your Versa 4 is not tracking your heart rate data. I understand your concern, I will do my best to help you with this!

As our last resort, I'd recommend performing a factory reset on your Versa 4. Important: Take into consideration that a factory reset deletes any stored data, which includes all data that hasn't synced to your Fitbit account and your applications, alarms, etc. 

With the above being said, please press and hold the button for about 8 seconds until the screen turns off and vibrates. When you feel the vibration, release the button, then immediately press and hold the button again. Wait for the Fitbit logo to appear, then as soon as the logo disappears, release the button, then press and hold the button again. When you feel the vibration, release the button, then wait for the watch to complete the factory reset.