API Data incorrect at 00:00-00:30 window

Afternoon all,
I pull my data daily via giv api, noticed a few days where my usage seemed extremely high - specifically between 00:00 and 00:30 on the 11th, 12th and 19th feb.

On the 11th I pulled 22.2kWh from grid to home between 00:00 and 00:30, 38.70kWh for the day.
on the 12th I pulled 29.9kWh from grid to home between 00:00 and 00:30, 45.20 kWh for the day.
on the 19th I pulled 16.7 kWh from grid to home.

Matching with octopus, the whole day for the 12th I pulled 27 kwh over 10 half hour slots (go times).

for the 11th I pulled 29.574 kwh over 10 half hour slots (again go times).

Data for 19th isnt on the portal yet, but the numbers dont match between giv and octopus significantly

Any ideas what is going on?

Happened to me 9th and 13th according to the app. I have a Home Assistant integration routine between Ohme EV charger and AIO which I suspected might have affected reporting but it also happened in 2025 before I had this. You didn’t consume this energy it’s just a reporting error. There was some discussion of cause in 25 but I’m not sure it was ever resolved.

I’m on a gen2 5kwh hybrid, only seems to have been for those three days so far, and always in that. 00:00 to 00:30 slot when generally my usage would be at 00:30 onwards on the go cheap slot.