My partner has had an AM1 for about a year or so now and it's been fantastic up until recently. All of the cables are correctly attached and have been removed and reconnected with all the pins still intact. The LED monitor displays the battery levels correctly and it all appears to be working beside it not actually working. If we leave the bike for a few days and do the brake sensor rest procedure, the motor works until we press the brakes once - then even the procedure doesn't work to get the motor working again and we have to leave it.
Not sure what to do in this situation as bike shops are unable to help!