Hi.
Did you look into setting up your system without the Logger V2? I am asking because having already the Venus GX as a control unit (which can be connected to the internet), it seems like overkill (and waste of money/resources) to also install the Logger V2.
I installed a Quattro with a Smart Solar 250/100, a CCGX, and a couple of Solar MD batteries, which is already running, but I haven't yet managed to have the batteries identified by the GX.