Sleep data not showing on Ionic but showing on the app

[Aquarius2]

The sleep function on my watch has not updated since last Friday. I have shut it down & restarted, pushed all 3 buttons etc but no change.

Moderator edit: Updated subject for clarity 

[SilviaFitbit]

@Aquarius2 Welcome to the Community. Thanks for the details mentioned and the troubleshooting tried. 

It's pretty weird that your Ionic isn't showing the sleep information. I would like you to confirm that you've restarted following this procedure: 

1. Press and hold the back and bottom buttons until you see the Fitbit logo on the screen. 
2. Let go of the buttons.

If after this, your sleep data is still not updating, please provide me with a picture of what you're seeing in your watch. 

I'll be around if you have any additional questions. 

[Aquarius2]

What is the BACK button?
There is a button in the left & 2 on the right but what is the back button?

Sent from my iPhone

[SilviaFitbit]

@Aquarius2 Thanks for getting back. See the screenshot below: 

I'll be around if you have any additional questions.