I need help with a disposable mastercard.

So I bought a card from a store, but it wont work on the Nexon website. It's a 25$ Vanilla mastercard giftcard, and for some odd reason it won't work while I've had no problem with visa gift cards previously.

Am I doing it wrong?

Edit: Nvm, on the back in microscopic print it says I can't use it 24 hours after purchase.

Nope, still wont work, can anyone confirm if vanilla mastercard giftcards can work for purchasing nx on the website?

Don't you need to sync up the card to an address? Try to do it on the website.

Don't you need to sync up the card to an address? Try to do it on the website.

On the website it only asks for my postal code to register the card, when I enter my card info on Nexon's billing page it comes up declined.