Candy cane key?

#1
I bought a key and at first I thought you had to use it like magic to open the crate, and sent a CAH for this, and then was told I didn't need to use it this way.
So then I tried to open one of my crates, I clicked it, I double clicked it, it won't open? I tried clicking the key and it kept switching between my inventory and my worn pins.
Just seemed like a weird glitch, but now I have a fashionable pin.
 
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