This is the screenshot.

The issue has been resolved. We found that setting the product name parameter of Xcode to more than 10 Chinese characters can lead to IAP failure. I don't know if this is a deliberate restriction by Apple or a bug in iOS 17.4. when we using SKProductsRequest to request product information, StoreKit will throw the following exception message: [c3d9_SK1] Failed in XPC product request products(IDs: ["xsdqxz_tehui_1"]): Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.storekitd" UserInfo={NSDebugDescription=connection to service named com.apple.storekitd}

Please take a look at this post: https://developer.apple.com/forums/thread/748032

We have also encountered this problem. We have provided feedback to Apple, and the response is to ask the user to contact the support team for a refund.

Currently, we are experiencing this issue with specific products in two of our games. We are using StoreKit 2. The problem occurred approximately at: 2025-06-17 02:00:00 CST (GMT+8)

The issue appears to have been resolved. Based on our user data, normal operations resumed around 2025-06-17 17:00:00 CST (GMT+8). 问题似乎已经解决。根据我们的用户数据，系统运行在 2025-06-17 17:00:00 CST (GMT+8) 左右恢复正常。

我发现用户之前支付正常，但是更新到 iOS 26 之后，就出现了这个问题。我查了日志，所有iOS26的用户都会无法结束交易！ I've discovered that the user's payments were normal before, but this issue emerged after updating to iOS 26. Upon checking the logs, I found that all users on iOS 26 are unable to finish transactions!

7月8日推送 iOS 26 beta 3，所有更新系统的用户支付都遇到了这个问题，应该是系统bug。 On July 8th, iOS 26 beta 3 was released. All users who updated their system encountered this payment issue, which is likely a system bug.

和我遇到的问题一样，应该是 iOS 26 Beta 3 的bug。 Like the problem I encountered, it should be a bug in iOS 26 Beta 3. https://developer.apple.com/forums/thread/792437

在我更新到 iOS 26 beta 4 后，该问题已解决。 After I updated to iOS 26 beta 4, this problem has been solved.