Spoil?!!

So, I've been playing Lineage II after a long 8-year hiatus and decided for a dwarf scavenger for mats. I'm at lvl 29(already did first class quest) using spoil-sweeper like crazy and geting nothing. LITERALLY, nothing. No mats, no recipe, no nothing. I have a empty inventory. What I do:



Select target



Use spoil



See success mesage



Kill mob



USe sweeper



Se 'you used sweeper' mesage.



And nothing drops. As a matter of fact, nothing is droping AT ALL, only those mana and health herbs. I'm at Shilen server. WTH is going on?!?!