Alta HR won't track my sleep stages

[TinaStone]

I have a Fitbit Alta HR. Since a week now, I see no sleep fases or sleep score anymore. It has happened before, for 1 night here and there, when my battery was low or I had the wrong position. But now it is like that for 7 days in a row. Anyone knows how to solve this?

Moderator Edit: Clarified subject

[MarreFitbit · Accepted solution]

Hi there, @TinaStone. Welcome to the Community Forums. Thanks for the details provided in your post about the issue with your Alta HR. I understand where your concern is coming from. 

Keep in mind that you must see sleep stages in order to see your sleep score information. Please swipe left on the Sleep Score graph, here you can see information about your weekly sleep average and sleep duration. To get more detailed information, see What's sleep score in the Fitbit app?

With that in mind, I recommend considering the following in order to get sleep stages:

• If you slept in a position that prevented your device from getting a consistent heart-rate reading or wore it too loosely. For best results, wear your device higher on your wrist (about 2-3 finger widths above your wrist bone). The band should feel secure but not too tight.
• If you used the Begin Sleep Now option in the Fitbit app (instead of simply wearing your device to bed). For more information on automatic sleep tracking, see How do I track my sleep with my Fitbit device?
• If you slept for less than 3 hours.
• If your device’s battery is critically low.

For more information, see What should I know about Fitbit sleep stages?