I bought two of them when winter was just beginning, and therefore, they didn’t have enough light probably.
I transferred both from the original substrate (looked like peat) into LECA, and then they lost their pitchers. Probably due to stress and low humidity.
I already was afraid that they don’t like the substrate.
Now, they get more light, and due to the longer day hours, they now know it’s time to catch insects!
Awesome!
From my experience they don’t like too much direct sunlight though. Before my brother killed mine it grew best with sun from morning to midday.