Maybe it's just me…. But since the new firmware update my Fitbit has not read my heart rate unless i reboot or reset the whole thing. Even then it doesn't last long. :
Fitbit Aria Wi-Fi Smart Scale FB201B Router Login and Password
Fitbit Aria's stop working after v.39 update, is this deliberate? What can be done? : r/fitbit
Aria 2 can't be removed from my account - Fitbit Community
Solved: Aria WIFI Err with set up - Page 9 - Fitbit Community
How do I update my Fitbit device?
Why can't I update my Fitbit device?
General Fitbit Troubleshooting Techniques - dummies
Aria Air Update - Apps on Google Play
Aria Air Update by Fitbit, Inc.
Pre-order the FitBit Charge 5 and Get a FitBit Aria Air Worth Php 2,9990 For Free! - TechBroll