The paid currency of Delta Force is Delta Coins: they pay for the Battle Pass and for operator and weapon cosmetics, while the game itself is free. Coins are offered here as a code and in two variants: Europe and Global. Which variant suits you depends on the region of your account, so compare the region in the product name with your account. The code appears in your account and you redeem it yourself.
A region mismatch is not grounds for a refund, so check the region before you pay. If a code does not work, contact support within 48 hours of receiving it, with a screenshot of the error. You can pay by bank card or from your balance.
