Why is the power monitor’s current value (I) very small and energy reading accumulating slowly?

Please check if the CT ratio is setup correctly on the meter. CT1 stands for the primary side of the CT ratio and CT2 is for the secondary side.

Make sure that CTs under settings on the web server is selected to Rogowski coil CT (RCT). To set up the CT ratios (CT1 and CT2), you should enter the rated Current (I) amps in CT1 and RCT in CT2.