👀 It worked for me last night after I turned it on yesterday... will see if it still works tonight. I had a fitbit before with similar issue where it took a few days of sleep tracking for it to even show up and work more consistently. Not sure if the same is happening here.
Don't know if this helps. I had to turn mine on,on the actual watch. Even though it was on on the phone in the Samsung health app. On the watch go to settings, Samsung health, measurement, scroll all the way down, and toggle on.