Sleep score and sleep stages not displaying

[Snooky]

For the last 2 nights I have only had a simplified sleep report and no sleep score.  It was fine before.  The heart rate is displaying perfectly and the band is fine.  Any suggestions please?

[AlvaroFitbit]

@Snooky Welcome to the Fitbit Community! It's great to have you here!

Let me help you with your missing sleep score and sleep stages. Sleep score needs to have sleep stages detected and you may not get these for the following reasons:

• 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?
• If you slept for less than 3 hours.
• If your device’s battery is critically low.

Let me know how it goes.