SpO2 is not working on my Versa 4

[Ninjagranny]

I really do have to question why I continue to pay for the very service SP02, that Is so irregular that I consider it non working!

Moderator Edit: Clarified subject

[MarreFitbit]

Hi there, @Ninjagranny. Thanks for stopping by in the Fitbit Community Forums. I'm sorry to hear that your Versa 4 is not tracking your SpO2 data properly. I understand where your concern is coming from, I'll be glad to help you with this. 

To make sure your Fitbit device successfully measures your SpO2 values, keep the following in mind:

• Your device doesn’t retroactively measure your SpO2 values. When you start using Fitbit SpO2, you’ll see dashed lines until after your next sleep session.
• You must get at least 3 hours of quality sleep. Data is only collected when you’re still. If you move a lot during your sleep or the sleep session is too short, you might not get SpO2 data.
• Charge your Fitbit device to make sure it’s able to collect data throughout your entire sleep session. Note that you may have to charge your Fitbit device more often when using an SpO2 clock face or app.
• You must sync your Fitbit device with the Fitbit app before the clock shows your SpO2 data. Note that it may take around an hour for your SpO2 values to appear after you sync your device. For troubleshooting syncing, see Why won't my Fitbit device sync?
• Turning off any SpO2 clock face or app permissions can cause the feature to stop functioning. For instructions on adjusting permissions, see How do I install and manage apps on my Fitbit device?
• Your Fitbit device must be able to consistently track your SpO2 data:
  • Wear your device slightly higher on your wrist.
  • Make sure your device is in contact with your skin.
  • Your device should be snug but not constricting.
  • Tattooed skin can impact the accuracy of the red and infrared sensors on your Fitbit device.

On a side note, please note you have not to pay for SpO2. If you're paying for Fitbit Premium, please check this help article to know all the features included after getting Fitbit Pay.