Pourl Your SOC was 65% and adjusted time for your 3:00-6:00 export was set to 3:00-4:48. Which seems an accurate prediction with a 10.4KWh battery and a 2.6KW discharge rate to target for 20% remainder.
I've seen reports from Giv users with unexpected SOC drops, and I'd hazard a guess there's something like that going on here.