Nostalrius Begins - Quality wow vanilla realm (1.12)

hi, i was trying to complete The Shattered Salute chain quest for rogue poisons but the quest became bugged so i abandoned the quest to retry it but now the npc does not show the quest for me .

is there anyway i can get this to reset? i have tried deleting my WTF and WDB folders and disabling addons but nothing has worked so far.....any ideas?