Charge 3 not tracking sleep stages

[K2THEJ]

I've been looking on forums trying to resolve this and nothing seems to work. I had my Charge 3 for Christmas and the sleep tracking worked for the first 10 days or so, and hasn't been working properly since. I relax for an hour in bed before going to sleep. I normally get up once during the night and it seems to start tracking my sleep when I go back to bed, so thinks I've gone to bed at 3-4am and got up at 7. 

I've tried:

- Re-setting

- Changing the sensitivity

- Syncing just before using the 'Begin sleep now' function

- Syncing just before NOT using the 'Begin sleep now' function and relying on the tracker alone

It's frustrating as one of the main reasons for me buying a fit bit was to help improve my sleep habits and it feels like a waste of money. If anyone can help I'd be really grateful.

Moderator edit: updated subject for clarity

[MarreFitbit]

Hi there @K2THEJ, welcome to the Community Forums. I am sorry to hear that you are going through this situation. I appreciate your time while troubleshooting the inconvenience with your sleep prior to contacting us. 

If you are not receiving sleep stages, I recommend considering the following:

• 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.
• 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.

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?

Note that we are aware of Sleep Score may take longer than usual to appear in the app. We’re currently working to resolve it and hope to have a fix soon. Be sure to keep your Fitbit device and app up-to-date to ensure you receive the quickest resolution.

If the steps above don't work,  as a first approach, I'd like you to perform the following steps below for this situation:

• Switch the Heart Rate settings from On to Off and manually sync your Charge 3. To switch the heart rate settings on your Charge 3, from the main screen of your Charge 3, swipe left until you see "Settings", next swipe up until you see "Heart Rate" and switch it to Off.
• Once it's done, manually sync your Charge 3. To do so, open the Fitbit app, tap on the Account icon, tap on your Charge 3's image and tap on "Sync Now" 
• Next, switch it from Off to On and manually sync your Charge 3 once again.