Clock on my Blaze

[Msingo59]

It won't change. I tried several times and it remains on the original one.

[Rich_Laue]

I'm not sure if your using the app or web to change the clock face.. You may use either, but must do a sync before the clock will change. You might want to go the the Blaze settings and see the last time the Blaze synced. It should say a moment ago.
Here is your manual. https://staticcs.fitbit.com/content/assets/help/manuals/manual_blaze_en_US.pdf

[AlejandraFitbit]

It's great to see you around @Msingo59 and @Rich_Laue thanks for stopping by and the tips provided. If your Blaze is not keeping the time, I recommend changing your timezone to a complete different one, sync your tracker, put the correct time and sync your tracker one more time. 

To change your timezone do the following from the Android Fitbit app:

1. Tap the Settings icon

2. Tap Account

3. Tap Settings

4. Turn off "Automatic time zone"
5. Tap Select time zone

6. Select your timezone

7. Sync

Let me know how it goes.