I had a tandem upgraded with a BionX electric motor. About 18 months later, the motor lost its punch and I asked the bike shop for help. But then BionX went ban

I had a tandem upgraded with a BionX electric motor. About 18 months later, the motor lost its punch and I asked the bike shop for help. But then BionX went bankrupt and the shop couldn't fix the tandem. They removed the electric motor and refunded me.