@mrclowny Had this happen to me today and simply tapping the power button while plugged into the charger fixed it.
I typically have my board setting vertically to charge and when I was plugging it in it seemed to be behaving as though I instead had turned it on while unplugged and the app complained that the board needed to be level to ride, etc.
Had unplugged it a couple times before coming here and seeing your suggestion. thanks. Immediately started charging and the light began pulsing normally for that state simply by tapping the power button, which is counterintuitive.