No story quest after LV 15

My alt is LV 20 now and no NPC has any story quest for him. My alt's name is Korbash Zhan, on Gilgamesh, leveling a Thaumaturge at Ul'dah. I've checked on websites and Momodi at the adventure's guild should have given me two quest at LV 17 but like I said, beside Eastern Thanalan, and a few too high level quests for me, there is no quest at all. Momodi has no quest and no quest in western Thanalan as well.

The last I did was "The Ul'Dahn envoy" at LV 15 a year ago. I've restarted playing last week.