Versa 4 no longer showing REM or deep sleep

[Mkherman]

I had a forced update this morning and the sleep tracking feature changed. It used to show awake, REM, and deep sleep. Now it shows awake, restless, and asleep. How do I get it to show REM and deep sleep again?

[JuanFitbit]

@Mkherman , A warm welcome to the Community! Thank you for your message. 

Please verify that the heart rate was recorded continuously, and that there were no interruptions during the sleep. 
Also please take the following into consideration: 

The following conditions can prevent sleep phases from being recorded:

- You record your sleep using the app instead of the tracker's automatic sleep detection.
- The tracker's battery is almost empty when you go to bed (less than 25%). This prevents regular heart rate recording.
- You use the metal bracelet while sleeping
- You sleep less than 3 hours.
- The bracelet is too loose or too tight on your wrist. You should be able to put your index finger between the bracelet and your arm without much resistance so that your heart rate is recorded regularly and sleep phases can be recognized.

[Mkherman]

Thank you but the heart rate is recording fine. It shows that I was asleep more than 3 hours. The bracelet fits fine and is plastic. Any other thoughts?

[JuanFitbit]

@Mkherman , Thank you for your reply and confirmation. 
In that case, please charge the Versa 4 for at least 30 minutes. Syncronize the watch with the Fitbit app, so that any info gets saved in your account. 

Remove it from the charging cable. 

Press and hold the button for 8 seconds or until you see the Fitbit logo. 
Release the button. 
The Versa 4 should restart. 
Try using the Versa 4 again to track your sleep. 

[Mkherman]

Restarting my Fitbit fixed the problem for the following few nights. But it just happened again  I restarted the Fitbit again so I hope it will record REM and deep sleep tonight. Unfortunately, even after restarting it does not update the strange sleep log that shows the amount of time I was asleep  and the amount of time I was restless without REM and deep sleep tracking. Why is it doing this?  Is there some way to prevent it?  Thanks!

[JuanFitbit]

@Mkherman , Thank you for your message and confirming that the restart helped, even for a few nights. 

If you check the heart rate during the nights of the missing sleep stages, do you see any interruption? Or is it a constant recording?