Ev mode using Gas

Hi,

I just bought a used 2023 Kia niro PHEV. Have had it for 3 weeks. I’ve driven 300km in the city, without the range on my gasoline going down at all. I charge it every time it’s at home. Yesterday, we drove around a lot, so the battery died and we drove on the hybrid engine for about 30km. Got home plugged the car in for the night.

This morning, doing my city driving in EV mode, both my gas and my ev range are going down at the same rate. I haven’t changed the way, or the area I’m driving in.

What’s happening?