Ok so system is finally up and running, not 100% yet but close enough, 1x bad connection on MC4 connector so my 1x PV string is not operational yet, will be fixed this weekend.
Problem now is I have to get it registered ASAP. My prepaid meter is giving problems. What I have found is that the unit is actually only a user interface (UI) that communicates to the actual meter which is elsewhere (usually not on the property). It communicates via PLC (power line communication), basically it sends communications to & from the actual meter over the house (grid) wiring. What happens is that when the house (and thus the meter UI as it is pugged into a socket fed from inverter) is supplied by inverter, this communication fails.
Temporary fix was to move the meter UI and connect it directly onto my existing house DB (I left the E/L and a circuit breaker as spare). This way the meter UI is connected to the grid even if the rest of the house is fed from inverter, problem is when my inverter pushes excess power back into the house DB the meter UI sometimes looses connection. So in short I guess I need a new prepaid meter which they will install when I register the system.