> ## Documentation Index
> Fetch the complete documentation index at: https://www.pickfu.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Payments and billing

> Payments and billing

## 文章

<CardGroup cols={2}>
  <Card title={"如何更新我的付款方式？"} href="/zh/help/how-do-i-update-my-payment-method" />

  <Card title={"我可以为问卷、调查或订阅申请退款吗？"} href="/zh/help/can-i-get-a-refund-for-my-poll-survey-or-subscription" />

  <Card title={"我的付款信息安全吗？"} href="/zh/help/is-my-payment-information-secure" />

  <Card title={"我们有微信支付啦！"} href="/zh/help/how-do-i-pay-for-tests-with-wechat-pay" />
</CardGroup>