How do I unlock the Victorious Aatrox Chroma?

So it say in the bottom of my profile 1 queue with the Aatrox skin being unlucked and then next to it it says 2 queues and the chroma being locked. If it's playing 2 games in this season then I did that. I played over 600 ranked games this season and if it's playing 2 games after the skin was "unlockable" I did that as well. So what do you have to do to unlock the chroma? I'm quite confused
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