Crashed every time I tried to open it on Samsung Galaxy S21, so once we got it working on another phone it charged a $10 fee. We scanned a QR code on two bikes, it approved the first then said the second was under maintenance. So we had to walk down the sidewalk pushing the one bike because it was still locked looking for a second. Once we found one we unlocked it but the bikes kept saying we were in a no bike zone and deactivated the bike, even in a bike lane and on the road.