Versa not tracking sleep stages

[mlrussell1]

I have a fit bit versa.  when i first got it tracked my sleep fine.   however over the last 2 weeks it has only tracked my basic data and doesn't provide insight as to why.   if i reset my fit bit out will track my sleep for that night then return to tracking basic data.   i wear it far enough down my wrist that it should be able to catch my heart rate and i know i sleep for more then the need 4 hours.   any ideas on how to fix this

Moderator edit: Updated subject for clarity 

[SilviaFitbit]

A warm welcome to the Community @mlrussell1. Thanks for the details mentioned and the details you've checked before. 

There are a few scenarios where you might see your sleep pattern (which shows your time asleep, restless, and awake) instead of sleep stages. I know you've checked some before but please double check them below: 

• 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.

I'll be around if you need further assistance. 

[mlrussell1]

So interesting turn off events.   the fit bit app this morning showed me my sleep details, slept almost 8 hours,  but on the versa it only shows i slept a little over 4 as if it only recorded basic details.   im not too worried as long as i can view my details, more curious as to why.

[SilviaFitbit]

Thanks for getting back @mlrussell1. Sorry for the delayed reply. 

It's pretty weird that your Versa isn't showing the same sleep information as the one showing in your online Dashboard. I would like you to restart your watch and continue checking if you get the same information in both. 

I'll be around if you need further assistance.