The ember isle puzzle is found around (12823, 3857) Nykantor Ruins and Forlorn Fen in Ember Isle
Solution: Part 1 and 2
Look at the plaque and step back till Two dull blue orbs come into view
Click the left orb then click the right orb then back to left until A plaque Shows on the ground Part 1 complete.
Part 2 is exactly like part 1 only difference if instead of A plaque you get a chest