Hi! I am having an issue with my brand new Radrover that arrived in the mail last Friday. After assembling it, I took it for a test run to my local grocery store. Halfway through the trip I received an error 21 code and the PAS and throttle ceased to work. The code disappeared from the display when I got the bike home, but still no throttle or pedal assist. I am a complete newbie when it comes to things like this so any suggestions please 'dumb down' I got this bike as my primary transportation to and from work but sadness has quickly set in. I contacted Rad Power and hopefully will hear back from them. Thanks for listening!