Double XP 2xp

Does this just not work? Or what?

I’ve had 21 games of it, and at the end of the game when it tallies up all the points, nothing is added compared to a normal game without 2xp.

I did everything I was supposed to on the website, input code → apply to gamertag, and still got no results. Any help, solutions, or does anyone have the same problem?

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