This is for anyone else who may have trouble getting the new 2Q to communicate with Victron.
Assuming you've wired it all correctly AND have the adapter that connects to a Cerbo or other Victron VX device's VE CAN port, then you'll need to configure a non visible setting on the BMS.
First, the password to open comms is "2Q-XXXX" where the 4 X's are your serial number.
Send address = 1
Receive address = 0
Under manual communication, the address is "1" and the message is "CHRG 1" (All without quotes).
This changes the CAN bitrate to 500k, which Victron seems to prefer.