I have 100$ visa gift card buy it in NY
I can't use it to buy a game
But look like It's keeping error.

any suggestions ? thx

Try with another browser.

Most prepaid cards won't work overseas. Since GOG is an international site, buying games from the US counts as an international transaction, and it will be refused. If you're actually in Thailand at the moment, it's possible it won't work at all, unfortunately. You can get internationally-enabled prepaid cards, but they cost extra, and you can't usually find them in department stores or anything; you have to go to a bank.

Check the fine print on the card to see if it's usable outside the US.

Thx, look like the card not support international transaction at all
:(

Damn :( If you really want a game from GOG, maybe you can ask someone else to buy it for you and you can buy them back something else on Steam or something. Could be a way around it.