My fitbit blaze no longer tracks my heart rate as of 3 days ago. Everything else works fine.

If your Fitbit device isn't showing your heart rate, try the followingtroubleshooting tips in the order shown. After each tip, view your heart rate to see if you solved the problem. ... Fitbit Alta HR, Fitbit Charge 2, Fitbit Charge HR-choose a section below to make sure your heart rate tracking setting is set to Auto

info i was able to find i hope it helps

When do I need the wireless sync dongle?
Fitbit Store.

Note that Blaze customers who want to use a computer don't need a dongle if these conditions are met:

• The computer is running Windows 10.
• The Fitbit app for Windows 10 is installed.
• Blaze is in the charging cradle.
• The other end of the cradle is plugged into a USB port on the computer.

In this scenario syncing occurs while Blaze is in the charging cable. It only works in conjunction with the Fitbit app for Windows 10.

Fitbit Setup

Note that only setting the time zone can be done manually. The specific time is derived by syncing with the primary device, not the fitbit.

wrong site need to go on the correct seller site this is fixya

Fitbit Store: Buy Surge, Charge HR, Charge, Flex, One, Zip ...

https://www.fitbit.com/store

FitbitBuy Fitbit devices and accessories at our official online store for free shipping on $50+, 45-day money back guarantee and 1 ... Interchangeable Bands ... Fitbit Charge HR™. HEART RATE + FITNESS WRISTBAND .... United States (change).

Fitbit Charge HR Review: This Is The One You Want

gizmodo.com/fitbit-charge-hr-review-the-king-of-fitness-tracke...

GizmodoFeb 4, 2015 - The Charge HR, on the other hand, has a standard watch strap with a closure that ... Well, most fitness trackers out there are really just glorifiedpedometers. ... With the HRM, I took my pulse (or had a friend take it) and then check the display. ... Fitbit claims the Charge HR will last "up to five days" on a fully ...

Fitbit Charge HR Fitness Wireless Activity Wristband Review

Press and hold the reset button, for 5 seconds, while in Time mode. this will reset the heart monitor and the symbol will reappear on the screen.