> For the complete documentation index, see [llms.txt](https://help.mochipay.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.mochipay.xyz/account-setting/credit-card.md).

# 信用卡設定相關

- [如何設定信用卡？](https://help.mochipay.xyz/account-setting/credit-card/setting-creditcard.md): 新增信用卡
- [如何重新設定/ 刪除付款方式？](https://help.mochipay.xyz/account-setting/credit-card/resetting-creditcard.md): 更換/ 刪除
- [信用卡設定失敗時怎麼辦？](https://help.mochipay.xyz/account-setting/credit-card/creditcard-error.md): 請確認信用卡已開通 3D 驗證！
- [為什麼我設定信用卡後被扣了 1 元？](https://help.mochipay.xyz/account-setting/credit-card/verification-1.md): 過卡交易不會實際請款，請勿擔心！
- [為什麼信用卡會授權失敗？](https://help.mochipay.xyz/account-setting/credit-card/authorization-fail.md)
- [為什麼要填寫信用卡的檢查碼（背面末三碼）？](https://help.mochipay.xyz/account-setting/credit-card/csv-creditcard.md)
- [為什麼要使用「信用卡3D驗證」？](https://help.mochipay.xyz/account-setting/credit-card/3d-secure.md): 簡訊OTP密碼