I bought 50 crates and it didn't go towards my black market achievement

Livinglife1

okay so i bought 50 crates because in the achievements section under black market it says purchase 5 crates and 15 and 50 to have better luck with crates. okay so i bought 50 and it didnt put any twoards my achievement and today i bought 20 and then a couple unicorn crates and it still has not gone up can someone please help me. because i dont have much money and the money i did spend which was 80 yesterday and 50 today i got nothing twoards the achievement.