The Pulse Ox only recorded the first night worn during sleep. Has not recorded since then even though the Sleep Tracking option is on under the Pulse Ox menu. The Vivosmart 4 is worn above the wrist bone and is fully charged as instructed in the app.
That seems strange. In cases like this, I might recommend first trying to turn OFF pulse ox for sleep, syncing, then turning ON pulse ox for sleep, then sync again. If it continues to not record and you're sure the battery is charged up, then it needs to escalate.
Did you let it record the sleep automatically or did you set the sleep mode manually?
When i found this manual sleep mode option i used it for a couple nights and it didnt record the pulse ox on either nights. So i just let it automatically detect sleep and edit the time i was actually asleep after. Then it started working again
I think you are confusing the Do Not Disturb setting with the Sleep Mode. As far as I understand the functions, there is no way to manually start/stop recording sleep. The quarter moon icon you may be referring to is the Do Not Disturb mode to stop notifications. Sleep can only be recorded automatically.
Oh you are right, I must have misread that somewhere. However it still didn't record the pulse ox while DND was enabled and I have it disabled in the settings also so it does not start DND automatically. Could that be it maybe?