Blaze keeps glitching

[SunsetRunner]

My Blaze keeps glitching and I don't know what to do

[SteveH]

First thing to try when a fitbit misbehaves is a restart using the following procedure:

1. Press and hold the back (left) and bottom buttons until you see the Fitbit logo on the screen. This should take less than 10 seconds.
2. Let go of the buttons.
3. If your Fitbit Blaze, Fitbit Ionic, or Fitbit Versa doesn't work normally, use the instructions in How do I turn off my Fitbit device? to turn your watch off and on again.

It does no harm and can sort out all sorts of issues. You might need to give it a few tries though as it's known to not always work.