Missing Reward from Lords of Verminion Achievement: Challenge Accepted

[Nefarri]

Time: 12/2/2015 (I think?)
Frequency: Once (Did not reproduce)
World: Exodus
Character Name: Nefarri Malzahar
Retainer Name: None
NPC Name: None
Monster Name: None
Class/Level: Might have been BTN or MIN (level 60)
Party or Solo: Solo
Race: Miq'ote
In-Game Time: Don't recall
Area and Coordinates: Golden Saucer, Minion Square
Housing: None
Steps:

1. I completed all challenges for the Lords of Verminion achievement: "Challenge Accepted."
2. I received on-screen notification of completion of the achievement.
3. I searched my inventory for the Clockwork Twintania minion (achievement reward). It wasn't there.
4. I checked my minion collection but still could not find Clockwork Twintania.
5. I checked character achievements to verify I got the achievement. It says I did.
6. The Clockwork Twintania minion is nowhere to be found.

[Bebekurenai]

Did you check with the achievement rewards NPC in Gridania? That's how you always get all your achievement items. They never go directly into your inventory, you have to "share the story" with Jonathas in Old Gridania 10, 6.

[Nefarri]

Oh! I was not aware of this. How embarrassing. Just went to talk to Jonathas and received a truckload of rewards from him. Thanks for the help! Much appreciated.

[Bebekurenai]

XD no problem, glad it wasn't a bug really, it's a nice minion. Congratulations ^^