My Nepenthes finally formed pitchers!

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!