Hey im not pretty sure which bms connection is right. i saw different schematic at esk8.builders.
the first picture described how the batterys connected to the BMS without balancer port. Battery 1 and Battery 2 seriell connected. The + Lead of Battery 1 goes to the + charger connector. The - Lead of Battery 1 goes to the + Lead of Battery 2. The + Lead of Battery 2 goes to the B- connection.