Charge 3 stopped tracking sleep stages

[Tomonton]

For the first month I was able to see my sleep pattern by graph, then it stopped. I have adjusted Fitbit to be 2 to 3 fingers above wrist bone. I’m doing nothing different than I did for the first month, don’t know what’s wrong 😂

Moderator edit: updated subject for clarity

[MarreFitbit]

Hi there @Tomonton, welcome to the Community Forums. Thanks for the details provided and for making sure about the placement of your Charge 3.

While reading your post I was wondering if you recently updated your Charge 3? This happened to my 3 days ago just after the firmware update. But, I found out that the update had apparently shut off the heart rate setting on my Charge 3. After having reset it to 'on', the heart rate monitoring came on again. As you know, sleep stages are based on your heart rate data. So, open the Settings app and find Heart Rate. Make sure Heart Rate is On. 

You can also take the below steps in consideration to make sure you get your sleep stages next time: 

• If you slept in a position that prevented your device from getting a consistent heart-rate reading or wore it too loosely. For best results, wear your device higher on your wrist (about 2-3 finger widths above your wrist bone). The band should feel secure but not too tight.
• If you used the Begin Sleep Now option in the Fitbit app (instead of simply wearing your device to bed). For more information on automatic sleep tracking, see How do I track my sleep?
• If you slept for less than 3 hours.
• If your device’s battery is critically low.

Give this a go and let me know if you get your sleep stages back. 😉

[Tomonton]

Hi,
I have reset the heart rate zones which had been turned off, so hopefully after tonight it will work again

thank you for your help