I am trying to level a Druid via the Legion Content.
But to actually receive your Artifact, you need to cast a Sunbeam to cleanse something in Karazan.
Sunbeam is lvl 26
I am lvl 20 (i did some other zone first)
Make a thread about it in Customer Support subforum (someone might be able to help you, although given Blizzard’s brilliant decision to fire a ton of people from one of the EU offices, this route might not be as effective as it used to be). Then open an in-game ticket (which might also take a while, for the same reason) and see if a GM can fix your problem.
The game gives you a way to do this. You know those quest notes on the right side of your screen? The game should provide you with the required ability there next to the respecting quest. I was struggling with it for a little while until I realised that you can find it there.