Charge 3 sleep tile doesn't show on account

[Angel20040]

The sleep tracking has completely disappeared off my Sony Xperia phone and my iPad. With the phone I have tried turning it off and on as well as the charge 3, several times. I deleted the app and reinstalled but now Bluetooth is not finding the charge 3. On my phone in the App Store I discovered dozens of reviews all done in the last couple of months complaining about the fitbits not syncing which I have also had heaps of problems with in the past and other people saying the sleep tracker has disappeared. I bought the Fitbit specifically for tracking my sleep so it is definitely not fit for the purpose I bought it for!

Moderator Edit: Clarified subject

[AlvaroFitbit]

@Angel20040 Thanks for being part of our Community! 

Sorry to hear that your sleep tiles aren't showing on your Fitbit app and that your tracker isn't syncing. Follow these instructions to re-add the tile on your Fitbit app. If this isn't the issue then could you share a screenshot of what you are seeing on your account? Regarding the syncing issues you can try the following:

1. Go to your phone's bluetooth settings and remove all devices listed there.
2. Restart your phone and restart your device. 
3. Check that no battery saving app/feature on your phone is affecting your Fitbit app.
4. Also, on an Android device, check that your app has the necessary permissions (settings > apps > Fitbit > permissions) and make sure bluetooth and location services (GPS) are on. 
5. You can find troubleshooting instructions here.

Let me know how it goes.