Posted by: FLEA11bravo
I had similar instance happen to me a few months ago. i played a playlist that i already had exp in. i played and earned 7 exp, and it didn't unlock. So, this time around, the night before the 7th, i played a playlist i had ZERO exp in, earned 7 exp, stopped playing, then jumped into match making on the 7th, and it unlocked for me. There's a lot of forums out there syaing that you have to have exactly 7 exp for it to work, and others say you only have to earn 7 exp in any playlist. Who is right? who knows, but it seems that the best way to achieve this is the way i explained above. It sucks that you have to wait another month, but you can spend the time now getting those 7 exp in a list you havent played yet. Good luck!
lol read the achievement and you would know who is right it clearly says "join a play list with 7 exp on the 7th of the month" it does not say, "Earn 7 exp in a play list on the 7th of the month"