Taico Batteries and BMS communications

I bought 4 100ah Taico batteries used, i am trying to communicate with my raspberry pi with victron venus and 2 150-35 mppts. i have all of the hardware setup and wired per the instructions, but it will not communicate. i also see references to taico bms software for setting the protocol, and have contacted taico asking for it, but they wont do anything unless i bought directly from them and have an order number… does anyone have the software or a link to it?
any other information would be greatly appreciated.
Thank you!