Shaman Quest Bug: "Elemental Mastery"

BUG: Shaman Quest

Elemental Mastery, part 1, is bugging.

I must collect samples of the elements (Elemental Water, Air, Fire, Earth) for Bath'Rah the Windwatcher.

I have all the quest items, but Bath'Rah shows no question mark, and no way I can interact with him.

What to do?

Yeah same ! All item but no question mark...

You can:
1. Relog

if that doesn't work:
2. Abandon quest and retake it

gotta love these answers... like who would think about RELOG or RETAKE QUEST LOOOOOL