It looks like you may not have finished the quests for picking a Loa. (Paku or Gonk.) The “pick” quest is showing as completed, but neither of the followups or the quest that sends you back to Rastikan are shown as completed.
Head up to the top of the Zanchul Temple and see if Loti or Raal has one of the following quests for you:
Gonk, Lord of the Pack
Pa’ku, Master of Wind
Only one of them wil be available depending on what you did when you completed Picking A Side.
If you can’t find either of those quests, it’s possible that those quests aren’t showing completion properly in Wowhead (as you can change your Loa later on, they may not flag as complete, even when done.) If that’s the case, see if you can pick up the final quest in the chain The Bargin is Struck. (The link will show you where you should be able to pick it up.)