Sense stopped syncing and tracking my sleep data

[danigonz]

My Fitbit sense stopped tracking my sleep and then notice that it was not syncing with my phone.

-I restarted my phone iPhone 12 Pro Max and it didn’t fixed the issue.

-I rebooted the sense and didn’t work either.

-I removed the sense from the phone app and added again to the Fitbit app and it worked. 

however it stopped tracking my sleep. No changes to the phone or sense. It just suddenly stopped tracking my sleep. It has been like this for 4 days. 

need help!!!!

Moderator Edit: Clarified subject

[MarreFitbit]

Hi there, @danigonz. Welcome to the Community Forums. Thanks for trying to troubleshoot the issue with your Sense before reaching out. I understand where your concern is coming from. 

Your Sense should start syncing your sleep data now that it's syncing. Nevertheless, if it doesn't track your sleep data in the next couple of days, I recommend taking into consideration the following: 

1. 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.
2. 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 with my Fitbit device?
3. If you slept for less than 3 hours.
4. If your device’s battery is critically low.

For more information, you can see: What should I know about Fitbit sleep stages?

Also, please perform a restart to your Sense by following the instructions here How do I restart my Fitbit device?

Hope that helps. 

[AnnaKuzm]

I see all stats EXCEPT SpO2 since 5 days - which is the most important to me. I have  tried everything suggested in previous post regarding this issue!