Franko It the CT clamp is the wrong way round you’ll find that despite however much solar you generate the batteries never charge up because the inverter is forever trying to match what it thinks is an incoming feed but is actually outgoing.
This happened to me when the Eon engineer fitted a new smart meter, he put the CT Clamps on the wrong way round. Its dead simple to just unclip the latch and swap them round on the meter tail to verify.
Bear in mind that the givenergy data is sampled, on local mode its every 10 seconds, and Im sure the house display is as well so you will get discrepancies as the inverter is constantly trying to balance demand to solar and battery capacity