https://www.kucoin.com/announcement/kucard-online-shopping-via-3ds-update
KuCard Online Shopping via 3D Secure OTP System Update| KuCoin
Dear KuCard Users,We are pleased to inform you that the technical difficulties we were experiencing with our 3D Secure One Time Password (OTP) system have been
3d secure otponline shoppingsystem updateviakucoin