Hi
After the last firmware upgrade of my Forerunner 45 to version 5.20 last week, the Sleep Time is not synced to the one I set in Garmin Connect. Specifically, in Garmin Connect the Sleep Time is 23:00 - 08:00, in Forerunner it shows 22:00 - 06:00. There is no way to change the Sleep Time directly on the watch, only enable/disable it.
I have synced the watch and Garmin Connect many times since the last upgrade but that setting does not change. Before the upgrade, there was not any issue with Sleep Time and Do Not Disturb settings as well.