> For the complete documentation index, see [llms.txt](https://help.listly.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.listly.io/docs/zh-hans/support/faq/1.-fu-kuan-yu-tui-kuan-shuo-ming/fu-kuan-shi-bai-le-zen-me-ban.md).

# 付款失败了怎么办？

订阅或首次付款失败，可能是以下原因导致的，请逐一排查：

* 余额不足
* 银行卡已挂失
* 银行卡已过期
* CVC 安全码输入错误
* 账户无效
* 超出支付限额

如果以上原因都不适用，请将付款失败的截图发送至 <hello@listly.io>，我们会尽快协助处理。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://help.listly.io/docs/zh-hans/support/faq/1.-fu-kuan-yu-tui-kuan-shuo-ming/fu-kuan-shi-bai-le-zen-me-ban.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.