I have an AXPERT 7.2 MAX inverter and two Pylontech Batteries. One US2000C and one US2000. I’ve set the US2000C as the master but on the inverter I get the 61 error code (BMS Communication). The Cable is good but I don’t know the configuration if it’s good or how it should be made for the batteries to work properly. When I had just one battery (the US2000) everything worked fine. Appreciate any assistance.