Cannot purchase something in a game app

Hello,

i tried to order something in a game app on my phone. I needed to put some money on my apple id, so i did. But when i opened the app, and went to the page where i would buy something. It didn’t worked, i got the note: purchase did not suceded, go to apple.com/itunes/support/ww. So i did, what is the issue that i cannot buy anything in the game?