I think they are both right .... looks like you have a problem with the way your cells are wired.
I'd pull the connector off the BMS and read there with a meter and get the voltages reading correctly before re-connecting the cell harness to the BMS.
Check the voltage on the cells with a meter. You have a connection issue with poor contacts or incorrect connection sequence. Carefully disconnect all the balance leads and ensure you reconnect in the correct order. I suspect they are connected in the wrong sequence.