In the high level configuration of the monitor, it is important you select the correct solar export mode.
When your GRID ct's are measuring both Import and export then you need to choose "Only your surplus"
When your GRID ct's are measuring purely the Consumption and your Solar panels are on a seperate Grid, then you need to select "You export it all".
When you select "Only your surplus" we will calculate the consumption by adding up the both Grid and Solar production.
When you select "You export it all" we will assume the Grid is the same as the consumption and will not do any additional calculations to calculate the consumption.