Problem with Surface604 Shred

[David Henley]

I've had my Surface604 shred ebike for 4 years. I started having trouble with it last week. I press the throttle but the bike will just barely move but there is not enough power to move the bike. If I press the brake lever the motor stops completely and won't run again until I restart the display on the handle bars. I've adjusted the brake system but that didn't help. Any suggestions would be greatly appreciated.
David Henley