Versa 4 and Sense HR and HRV not tracking correctly

[Wrightn]

Hello, 

I had a Sense for 3 years and recently the HRV started showing zero. It also started saying I was awake for 6 of the 8 hours I was sleeping. I've never had sleep issues and assumed it was time to get a new fitbit. I just bought a Versa 4 and after 2 nights it tracked the same thing. HRV is zero and my sleep pattern looks like I was up all night (which i wasnt). I know the simple answer should be that it's me and not my tracking devices, but I feel completely healthy and well rested. Is anyone else having issues with HR and HRV accuracies with Google taking over fitbit?

Moderator edit: clarified subject.

[ManuFitbit]

A warm welcome to the forums @Wrightn. 

Thank you for taking the time to share the inquiry regarding this difficulty that you are experiencing with your Versa 4. Sorry to know the situation with this feature. 

I recommend considering the following in order to get sleep and HR correctly:

• 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.
• If you used the Begin Sleep Now option in the Fitbit app (instead of simply wearing your device to bed). For more information on automatic sleep tracking, see How do I track my sleep with my Fitbit device?
• If you slept for less than 3 hours.
• If your device’s battery is critically low.
• For more information, see What should I know about Fitbit sleep stages?

Additionally, I'd recommend to sync your Versa 4 to the app after waking up. This will help to make sure that all your data is sync properly.