Sabvoton 72150 switched off

Hello guys. I brought recently a controller for my bike. Its sabvoton 72150. I set everything's, and do calibration of hall sensor. Then drive around 80km/h an then controller switch off. Don't know why. Any idea? If I put power bank to usb cable, controller switch on to diagnostic but still don't wanna switch on from button

just incase.... Youre sure its not the bms or undervoltage on your controller? keep voltage sag in mind