I have been unable to turn this in for the rewards. My quest log shows I have received the utility curio, but does not show I have equipped it. However, my companion equipment list does show the curio has been equipped. Also, Wowhead tracking shows I have completed this quest on this character.
The game master was no help in his response to my ticket:
"Customer Support does not provide game hints or restore items, currencies, or progress lost due to bugs."
I would be most grateful for suggestions on what I can do next.