Kill 1000 watchers achievement is not unlocking

So this is my last achievement in the MCC and it will not unlock. When I hover over it, it says 93% but when I click on the achievement it says 100%. I still killed atleast 30 more and nothing has happened. The 93% hasn’t moved not have I unlocked it yet. My gt is flamingdog2000 plz fix this as it is my last achievement in this game I have to unlock, thx.

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