Garmin Fenix 6 stopped recording sleep

Hi There, still no luck with sleep data being recorded. Feel like I’ve tried everything. 

I added a sleep widget to see my sleep data from last night and it shows the sleep data.  I go to Garmin Connect and it now shows only last night but not any night since July 12th.  It's like adding the widget forced the watch to sync that one night.  I added the widget after the sleep so the watch seems to be recording, just not reporting to connect. 

The good thing is that the watch appears to be recording the sleep. Might be worth checking with Garmin whether the sleep widget needs to be added to get the sleep from the watch to GC. Things changed when they moved to recording the data on the watch.

Is it not syncing to both the smartphone and the interweb? If the phone try the usual things like unpairing and re-pairing.

I noticed today that I have no sleep data on my 6S for last night - I have had for every other night. My sleep times are set, this is my preferred activity tracker. Software is 11.1, Sensor hub 7.12. There just is no sleep data in Connect, and the sleep widget says no sleep data recorded. I don't use any power-saving features and I was wearing it.

I had the same issue. Some how after installing the sleep widget. My sleep was recording. 
the issue I now have. 

I have to manually stop the sleep recording, in the widget. 

I did two actions which resolved this issue for me. First was toggle battery saver in the watch. Second was, in the app, manually remove Sleep from My Activities, then add it back in. Sleep for the morning appeared. 

I don’t know if this resolved the issue permanently but it’s a start!

Worked for me, too. 

Setting the device you’re wearing as the preferred activity tracker, this may help.