Issues with Mobile app no distance and pulse always low

[GillPowell]

I have a charge 2 which until last Thursday was synching fine with my phone app but now it does not show the distance and regardless of pulse rate shows 100% in low zone. I also can’t edit the exercise to add the distance in as it immediately removes it. 

[ManuFitbit]

Welcome to the forums @GillPowell. 

Thank you for providing the details regarding this difficulty with the Fitbit app. 

Our team is aware of the situation with distance and is working on a solution to it.

Many users have now confirmed that they were able to fix it by entering the stride length themselves. It's worth a try until our team has worked on the solution.
You can find instructions for this here: Can I change my stride length in my Fitbit account?

Regarding your heart rate, try to perform the following steps:

• Log out from the Fitbit app.
• Force quit the Fitbit app and reboot your phone.
• Open the Fitbit app and log back into your account.
• Check if the issue is still happening.

In addition, confirm that your device is up to date: How do I update my Fitbit device?