So I just got warzone, and I need to create an Activision account, as this is the first time it's required. I try to enter in my information, but it says invalid

So I just got warzone, and I need to create an Activision account, as this is the first time it's required. I try to enter in my information, but it says invalid

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Bought mw yesterday installed it and now it's telling me I need to buy more shit to play the damm game. Anyone know what I should do? : r/modernwarfare

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