I purchased Win/Loss reset, took ZP, no change?

I purchased Win/Loss reset from item mall, about 4kzp. It took the zp, but my wins and losses are NOT reset? I looked in inventory for anything that would look relevant to help me turn it on/off or use it. Nothing. I reopened the game. It's been one day. What is going on? Did it bug? Why don't I have my reset?

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