SPO2 not working for Fitbit Ionic

[AlexCal]

it worked 1 times in the last 10 days. I have removed and reinstalled the clock face and I still can’t get a reading. The oxygen variation works but no Sp02. I have tried all the troubleshooting suggestions. I have worn it loose, snug tried both wrists but I can’t get a reading. 
what else can I try?

Moderator Edit: Clarified subject

[CindyMFitbit]

@AlexCal Welcome to the Community. 

Thank you for taking the time to report this issue. I appreciate the troubleshooting tried prior posting. If you haven't done so, I recommend trying the following as below: 

1. Make sure the Fitbit app is updated, a new version was just released a few days ago. For more information, see How do I use the Fitbit app?

2. Restart your Ionic. For more information, see How do I restart my Fitbit device?

3. Restart your phone  

4. Set up your Ionic as new device 

• Tap the Today tab and tap your profile picture.
• Tap Set Up a Device.
• Choose your device and follow the on-screen instructions to continue.

5. Once the set up process is complete, try to install SPO2 app just one more time. See How do I track blood oxygen saturation (SpO2) with my Fitbit device? 

Hope this helps.