motion boom turning on and off by itself repeatedly
I know the App can turn it off with the Power Button.
My suggestion would be to 1st reset the Boom:
How do I reset Motion Boom?
Hold the Bluetooth and Volume+ buttons down at the same time for 5-10 seconds until Motion Boom restarts.
If that doesn’t help, I’d delete the App then reinstall it.
Finally if none of that helps, I’d contact Customer Support:
No issues here. Will join @Steve976 in his suggestions
Sounds like a stuck button.
As product is very new I’d just do a warranty replacement.
If it were out of warranty I’d be cleaning the buttons.