Nepenthes St. Gaya Carnivorous Pitcher Plant

I have worried about this one it had beautiful tendrils when i got it but they have all turned black and crusty, i am doing everything right. I bought a humidity tray with pebbles, a small humidifier that sets next to it, i water with distilled water only from the top and it doesn't stand in water maybe it is just me, wish i hadn't bought this one cause i dont want it to die