Well when a Quest completed, bot goes the town, does the down script (repair items, buy hp-mp, comes to training place and again returns to town. It is like a cycle.
NPC is in Mirror Dimention. I play on vSro 2Job
3 unlimited quests
did you try Enabling it? it worked for just enabled and started bot in mirror it takes it and goes to the training spot and when its finished it goes back walking to turn it in retake it and goes back to training spot
tho try enabling it from inside ( All ) tab might help dunno tho