After seeing your questions, we thought it was necessary to inform you on the payment operation on IDC/Games and on Steam.
Those of you who have a Steam account and play from Steam, you have to buy on Steam. Don't buy on IDC/Games, because your purchases won't go on your Steam account, but rather on your IDC account, which will be a problem if you don't play on it. You only have to click on the gold refill icon to open the store.
Those of you who have an IDC account and play from IDC/Games, you have to buy on IDC/Games.
If you have questions or doubt, contact our support team.
If you confuse your accounts, you WON'T see any refund.