@ChanMyb can you please take a screenshot of your HR recording visible in the Fitbit mobile app? I would like to take a look at the HR from the night the sleep stages weren't recorded. Also, has it happened before? What's your phone model, versa firmware version and Fitbit mobile app version?
Best Answer@ChanMyb Please report the picture. It didn't get uploaded. Thx! Also, would you happen to remember battery level at that time?