I bought an engwe ep2 pro eu version and rode it for 350 kilometers , now I have a problem with it , the motor powers the bike by itself without pedalling... Even when I put the bike on the standard at a store it just took off by itself... When I pedal the power coming from the motor is also inconsistent , it will stutter and power only sometimes... I can't find a way to factory reset the eu version , anyone have an idea what this could be? When I unlock the throttle it does the same thing although I can ride the bike fully electric with the throttle this isn't very safe.