I Just found how to purchase VNs at DLsite using my card.

For those outside Japan who've had trouble buying visual novels on DLsite, I recently discovered that Visa payments work (at least, it did for Duel Princess). Sharing and hoping it helps others facing payment issues. If there're any DLsite updates, pls let me know :)

Here are some options I’ve found:

Global payment:

Visa/Mastercard/Apple Pay/Google Pay: Now accepted directly on DLsite, and it will lead to a page where you can buy the serial code(points).

Local Payment:

1. Malaysia: Touch 'N Go, Boost, GrabPay
2. Philippines: Gcash, Maya
3. Indonesia: DANA, OVO, Shopeepay (Check out DLsite Indonesia's official site). I just found they'd released the news.
4. Thailand: Tue Money, ShopeePay