My Garmin 265 is not recording my sleep?

Probably best to post this in the 265 forum.

7174755 said:

I’ve had my Garmin for about a week and a half now and the past 4 night it’s not recorded my sleep

First of all check whether the sleep data is missing both in Garmin Connect and on the watch too. If the data is accessible on the watch, and not in GC, then there is a problem with the syncing. If the data is not available on the watch either, then verify whether the HRM sensor lights flash during the night. If not, then one of probable reasons is that the watch entered the power Battery Saver mode, and has disabled the sensor. Either disable Battery Saver in the night, or enable HRM in the Battery Saver options, or disable the Battery Saver altogether, or charge the watch.

There may be also other possible reasons. Some of them are listed for example here: 

• I Am Missing Wellness Data in My Garmin Connect Account | Garmin Customer Support
• My Sleep Statistics Are Not Displaying in Garmin Connect | Garmin Customer Support