I joined a server xp, and my account up to level 38, and I did not create .. creates to do everything right from the first level, I have done a reset score, / resetstats, and really goes to levl one, but when he left the game and I go back to get to level 38 someone help me?

and after playing, go out and play the game, getting back to level 38?

Stats cannot be lowered with /resetstats.. Just live with it or create a new account. And if you save credentials delete iw4m.ini