Stone of Revelations
Where: Elder Verkiry @ Dartrong City Square
Reward: 525 Exp & 80 Dartrong Rep
This quest continues once you have proven your abilities and strengths by reaching level 3.
This may be why you didnt get the xp you were expecting.
Also note that this quest continues all the way through lvl4 and some parts will not give experiance rewards until you have completed it in the next lvls. Sounds like the 5000 xp was a typo in the dialogue.