Charge 3 display and HR issues

[DarylB]

my screen is showing stripes, not registering my heart rate, and the brightness has decreased

Moderator edit: subject for clarity 

[LiliyaFitbit]

Welcome to the Fitbit Community, @DarylB.

Thank you for sharing the details of the issue you’re experiencing. I recommend trying the following:

1. Try to change the brightness setting on your Charge 3: go to Settings > Brightness and change to Auto or On. Please also confirm that you don't have "Sleep Mode” turned on: press and hold the button on your device. Tap a setting to turn it off. For more information, see How do I navigate my Fitbit device's screen?

2. Restart the device: How do I restart my Fitbit device?
3. If the issues persists, please perform a long restart:  

• Connect the device to the charging cable.
• While the device is plugged into the charging cable, press and hold the button down for 15 seconds.
• The device turns on and shows a battery icon. Two vibrations occur: first a short vibration, then a medium vibration
• The device turns off.
• The device turns on and shows a progress bar and short vibrations occur. The progress bar completes. Note: A total of 7 short vibrations occur.
• Remove the device from the charging cable. The device shuts down.
• Important: Plug the device into the charging cable again.

You can find the complete troubleshooting instructions to resolve the issue with your heart rate reading at What factors can affect my heart-rate reading on my Fitbit device?

Additionally, I recommend checking if your Fitbit app is updated to the latest version as updates come with new features and bug fixes: How do I update the Fitbit app?

By the way, I've moved your post to Other Charge Trackers board so we can keep our forums organized.

Let me know how it goes.