ROBOWHEEL 4 Wheels Motorised Electric Wheelchair

I recently purchased the ROBOWHEEL 4 Wheels Motorised Electric Wheelchair and I must say it’s been a game-changer for me. The comfortable cushion and wide retractable hand rest make it perfect for long drives. I’ve traveled up to 25 km on a full charge without any issues. One thing I would like to know is how do I troubleshoot the joystick if it gets stuck?