Okay, you should have been given Exotic Tea Leaves by Vex at Kazham Port. Try looking in King Ranperre's Tomb for the next NPC in the quest. He should accept the Exotic Tea Leaves. Give this a try and let me know if there are any issues!
I did it and got tiny animal skull, for that, I got a bottle of "Bourban" in Mhaura. Then, I failed to find anyone who wants it (I would suggest Vex, but she doesn't want it anymore, since she gave the tea leaves for golden coins).
Registration doesn't work for me now (some unknown error). Nevertheless, I filally found someone who exchanged the "Bourban". So no dead end (at least not for now).
