Do I have to upgrade? Fitbit luxe issues. Reocmmendations?

I primarily use my Fitbit for running, step tracking, weightlifting, walking, hiking, and as my alarm clock. My Fitbit luxe keeps randomly shutting off in the middle of the night and during runs. I noticed the mileage for ADK high peaks is off, too. I’m also training for a 1/2 marathon.

Did this happen to anyone else? Which Fitbit do you recommend? I love Fitbit products and generally enjoy my luxe.