GivEnergy Monitor for Android

I have just installed the Monitor app on an older Android phone, but I'm not seeing sensible power flow data.

I have a twin AC3.0 setup, operating in plant mode. I have connected to both inverters (via fixed IPs) and I can see all of the settings data, temps, batt voltages etc., but the power data just isn't showing for the individual inverters, or in the combined view.

(if I select just one inverter, I still get the same behaviour).

What might I be doing wrong?

Thanks.

I think 2 AC3's should work. It depends what meters are connected to what. The grid and solar readings are only taken from the first inverter.

Do the readings make sense when it is dark in the evening? I would expect the grid to be balanced at zero most of the time.