Solar generation with 2 Powerwalls

Hello All!

We have a three phase supply at home but only use one phase (L1). Attached to this there is a 13.2 kWp solar array and two Tesla Powerwalls… If I turn off the Powerwalls, and the sun is shining, we generate about 11kW which supplies the house and feeds back to the grid, zero imports. If I turn on the Powerwalls, the solar supplies enough to charge and continue supplying the house. Problem is, despite my Tesla and Solar Edge App’s showing we are not exporting, our incoming meter keeps clocking up kWh. Our solar installer seems to think we need our meter reconfigured to a different mode but Bulb tell me they don’t know… Really p.ssed off at the moment, spent a fortune to do my bit for the planet yet still paying for electric I’m not using…