That’s probably a failsafe adjustment.
Turn the board upside down, turn everything on until the wheels spin on-command, then turn off the remote. If the wheels start spinning when you turn off the remote, it’s unsafe and should not be ridden.
This is a different remote and I’m unfamiliar with the one you are using, but you can look at how a different remote does failsafe and see if maybe this one works the same way.