Ionic not recording sleep properly

[Cavancat]

My sleep is always broken into two categories. Today and yesterday. Why can’t I record say 10 pm to 8:00?

Moderator Edit: Clarified subject

[CindyMFitbit]

Welcome! It's great to see you around @Cavancat. 

Thanks for taking the time to share what you've experienced with your Fitbit Ionic. I recommend trying the following:

1. Make sure to not take off your tracker during the night.
2. Do you remember being awake during the night? If yes, that solves it! Keep in mind that your tracker will detect if you are awake and will stop the sleep tracking process. If no, proceed to step three.
3. Restart your device. See instructions in the help article: How do I restart my Fitbit device?.
4. Confirm that the device is snug on your wrist (with an HR tracker, the lights shouldn't be visible).
5. Try sleeping with the tracker on your non-dominant hand.
6. If the setting was set to sensitive, please switch it to normal. 
7. If steps 1-6 do not solve the issue, I suggest manually editing the sleep log to reflect the time slept. See instructions in the article: How do I edit my sleep history in the Fitbit app?.​

Hope this helps.