u/Atastical

After just a week of usage, my Bafang motor stopped working. It shuts the entire system off and I have to restart. At first under load, now even when stationary. Fully charged battery. I tried a different battery, a new display, always the same issue. I even have to turn the battery off and on again.
Aliexpress does not let me open a dispute, because I ordered more than 15 days ago. Never had that been a problem, but now it is. I can't even add a review. Weird. Anyways, I need a new controller, but all the ones on Aliexpress are having different connectors from mine. Does anyone know the pinout for the speed sensor, and bus cable (those seem to be the ones that are different, but I might be wrong)?
My motor has this code: MM G340.250.C written on it. Its a BBS01B.
This is my first encounter with Bafang and I can't say I'm happy. It was great when it worked, though.
All I see is UART controllers. Is it even compatible? Is mine a UART?
Edit: this is what the connectors coming from the controller look like.

lower connector has 8 pins