update alipay policy

blog/2024-05-07-cloudflare-and-alipay/index.mdx

@@ -24,20 +24,40 @@ Because of PayPal's restrictions, we were unable to accept payments from China u
 
 Because we are a startup, Alipay only allows us to accept one-time payments. We will add recurring payments once we meet their requirements.
 
-The free trial works differently for Alipay users: for the first payment, you will be charged immediately, but get one extra month (30 days) for free.
+We are looking to add WeChat Pay in the future.
 
-In the future, we plan to also add WeChat Pay for users who prefer that.
+### Change to the trial period
+
+The trial period for Alipay is different from PayPal. The first payment will be charged immediately, but we will give you an extra month (30 days) of service for free.
+
+### Refund policy
+
+In the 30-day trial period, if you are not satisfied with the service, you can request a refund in the **Settings** dialog.
+
+There will be a 1% processing fee for refunds to cover the payment processing fees.
+
+After the trial period (or the refund), we will not provide refunds for one-time payments.
 
 ## 接受支付宝付款
 
 根据国家外汇管制的要求，我们的 PayPal 账户不支持接收中国用户的付款。现在我们添加了支付宝付款。
 
 支付宝现在只支持单笔付款，我们会在满足支付宝的要求后添加自动续费功能。
 
-使用支付宝付款时免费试用的生效方式和 PayPal 不同：第一次付款会立即扣费，但是会额外赠送一个月（30天）的时长。
-
 我们计划在未来添加微信支付。
 
+### 试用期的变化
+
+支付宝的试用期和 PayPal 不同。支付宝的第一笔付款会立即扣款，但我们会额外赠送一个月（30天）的服务。
+
+### 退款政策
+
+在 30 天的试用期内，如果您对服务不满意，可以在 **设置** 对话框中自助申请退款。
+
+退款会收取 1% 的手续费，用于支付处理费用。
+
+试用期结束（或申请退款）后，之后的单笔付款将不再提供退款。
+
 ## Bug fixes and improvements
 
 We have fixed some bugs and made some improvements: