I noticed this a few times, I have unlock a few of them and the item would reappear in my inventory. The last one I unlocked it didnt appear, the item was gone. But just right now at this moment I tried unlocking another, and it reappeared in my inventory. I checked my wardrobe already and it unlocked. I did delete the coupon once it unlocked before, I wanted to report it just to let you know before I delete the

[Item=Ramn hair coupon]