Fitbit 3 not autodetecting walks

[Shelley1978]

 Has anyone had a problem with the Charge 3 not correctly auto detecting exercise?

I walk everyday at lunchtime and the device usually detects it. Since getting a replacement it either fails to recognise it or logs it as an outdoor bike ride? 

I got a replacement charge 3 on Thursday as the first one was not logging steps correctly or stair counts. 

[Chauntel]

Having the same problem with mine since Saturday.  I updated and have it set to auto detect walks but it isn't working.  Worked just fine from 10/9-11/2.

[armandsalmon]

I pasting my comment here from another post about the same issue with Charge 3.

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I am experiencing the same issue with my new Charge 3.

My Charge 2 HR auto detected anything over 15 minutes  Today I chopped wood for about an hour and later at the gym was on eliptical for 20 minutes .. Both raised my active minutes but did not log any exercise.

Is there something that needs to be done manually on the charge 3 ?

*EDIT: Found a solution here: 

https://community.fitbit.com/t5/Charge-2/Charge-2-not-auto-tracking-exercise-anymore/td-p/1895073

Short Version:

1.) Go into Fitbit App > Exercise

2.) Settings (gear icon) 

3.) Auto Recognized Exercises > (change the time to anything other than what it currently is. I changed all to 14 minutes..) SAVE. 

4.) Go back to dashboard (pull down to sync... May take a few attempts to sync. Previous data will sync (exercises and active minutes.)

5.) You should be able to restore the time setting for auto detected exercise back to 15 minutes or something else. 

In my case, this only happened after getting a new Fitbit so I think the app needs to reassociate that part of the app even though the new tracker is already added. 

[SunsetRunner]

Tried this as have the same problem, did not work, very frustrating