Hitbtc has raised the cost of utnp over 2000 NTN, what that means

HitBTC delisted UTNP. UTN was never listed on any exchange.
But the exchange can still store utnp if you kept them on this exchange before delisting. At least my utnp has been stored on a Hitbtc wallet until recently.
Yep, but we are not responsible for the exchange's activity.