Steel HR suddenly doesn't track sleep

Same problem with me 5 days ago! 😫

Apparently the steel and HR also have a temperature sensor built in. When we sleep, our temperature drops accordingly. This is one way the watch detects sleep as opposed to inactivity. To do this, your watch must be really snug against your wrist. My gf had the same issue which was resolved by simply tightening the strap by 1 notch.

No sleep recorded for the last week

My Steel HR just stopped tracking my sleep and heart since 1 April 2019.  According to my data, 4am 1 April was my last sleep data, 5am 1 April was my last heart data.

How do I report this as a problem?

I have the same problem, my Steel HR simply stopped tracking sleep on the 7th April. Tightening the band doesnt seem to have fixed the issue. Is there a way to resolve this problem?

Anyone looking for an answer to this, doing a Factory Reset of the watch seems to have done the trick for me

I also seems to have several nights without any sleep according my Steel. I have done factory reset, but this seems to continue. After few nights follows several nights without any recording. 

Do anybody of you have heard from Withings what this is about? I checked on the support page, but the answers they offer on the support page seems to be very general, most about how to sync the watch with the app. 

My Steel HR is not recording sleep from the 4th of August responce from withings said to do a factory reset.

I'm having the same issue. Was tracking my sleep just fine and then about 5 days ago it just stopped.

I have exactly the same issue - watch has been tracking sleep just fine and then a week ago it said I only slept till 4am which I actually slept till 6am. From that day to this I have had zero sleep data.

I have the same problem after last firmware update (6571) ... before the functionality works perfectly.