This isn’t the best way to address your accuracy problem. IoTaWatt is always much more accurate than you are reporting and these things ALWAYS end up being a configuration issue. I’m willing to try to resolve this but as I said in another thread, I don’t have a context to understand your setup, so I asked for some simple information as a starting point.
https://community.iotawatt.com/t/checking-accuracy/4503/6?u=overeasy