Charge 3 not tracking heart rate accurately

[Usaball19]

My heart rate won’t show up sometimes even though heart rate is on AND my c3 is on my wrist 

Moderator edit: updated subject for clarity

[Usaball19]

And green light works

[MarreFitbit · Accepted solution]

Hi there @Usaball19, welcome to the Community Forums. Thanks for the details provided about the heart rate data on your Charge 3, I'll be glad to help you.

As a first approach, I'd like you to perform the following steps below for this situation:

• Switch the Heart Rate settings from On to Off and manually sync your Charge 3. To switch the heart rate settings on your Charge 3, from the main screen of your Charge 3, swipe left until you see "Settings", next swipe up until you see "Heart Rate" and switch it to Off.
• Once it's done, manually sync your Charge 3. To do so, open the Fitbit app, tap on the Account icon, tap on your Charge 3's image and tap on "Sync Now" 
• Next, switch it from Off to On and manually sync your Charge 3 once again.
• Once it's done, restart your Charge 3 once again. To do so, press and hold the left button for 8 seconds while it is plugged into the charging cable as if it were charging. 
• Next, confirm that your tracker is snug on your wrist (the lights shouldn't be visible) We also recommend when you're not exercising, wear the tracker just above the wrist bone.

Give this a go and let me know the outcome.