Sleep Cycle data and score not tracking

[Welchy]

Hi, I subscribe to Fitbit premium and have set up my Sense to track my sleep. It was working fine until this morning. I woke up to find it had tracked my sleep but not any of the stages nor the final sleep score. 

I haven't altered the fit on my wrist and the device seems to be syncing fine in all other respects. Please can you help?

Thanks,

Nick

[Guy_]

It tracks sleeps with details if its duration is 3 hours or more, otherwise it doesn't

[Welchy]

Hey Guy, I slept for over 7 hours (and it tracked the hours, just not the stages or the score).

[Guy_]

Are you fully synced?

How did your heart rate do during the sleep period?

Did it give you a sleep score?

Were you awake for any length of time during the 7 hours?

Do you get the 3 premium sub tiles when you click on your sleep?

Look for anomalies in Restoration tile and Time asleep tile.