Some of my users reported they can not completed the purchase . According to the logs and screen captures . Their purchase progress's last status are "purchasing" func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) { .... .... case .purchasing: // 处理正在购买的情况 //print("购买中"); AppDelegate.log.debug("paymentQueue purchasing"); LoadingAlert.shared.setText(text: "购买中".localized()) .... After this ，It neither entered any error branch nor prompted the user to confirm the purchase or enter a password, but simply stopped here. There are no other purchase-related logs, and the program is still running normally. At the same time, other users are able to complete their purchases without any issues. However, there have been 4-5 users recently who reported problems with purchasing. What could be the possible reasons? In my local environment, I repeated the test many times, including using sandbox users from different regions and real Apple IDs, and everything worked fine. // // Payment.swift // RadialMenu // // Created by pat on 2023/6/26. // import Foundation import StoreKit class Payment:NSObject,SKProductsRequestDelegate,SKPaymentTransactionObserver{ func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) { for transaction in transactions { AppDelegate.log.debug("paymentQueue transaction product = \(transaction.payment.productIdentifier) state = \(transaction.transactionState)"); //let productID = transaction.payment.productIdentifier switch transaction.transactionState { case .purchased,.restored: if(transaction.transactionState == .purchased){ AppDelegate.log.debug("paymentQueue purchased"); LoadingAlert.shared.setText(text: "已购买".localized()) } if(transaction.transactionState == .restored){ LoadingAlert.shared.setText(text: "已恢复".localized()) AppDelegate.log.debug("paymentQueue restored"); } //} break; case .failed: AppDelegate.log.debug("paymentQueue failed "); if let error = transaction.error as? NSError { // 获取错误代码和描述 let errorCode = error.code let errorDescription = error.localizedDescription AppDelegate.log.debug("paymentQueue Transaction failed with error code: \(errorCode), description: \(errorDescription)") } queue.finishTransaction(transaction) LoadingAlert.shared.hideModal(); // 处理购买失败的情况 // 提供错误信息给用户 //print("购买失败"); alertRetry(); break; case .deferred: AppDelegate.log.debug("paymentQueue deferred"); LoadingAlert.shared.setText(text: "购买延迟".localized()) // 处理交易延迟的情况（仅限家庭共享） break; case .purchasing: // 处理正在购买的情况 //print("购买中"); AppDelegate.log.debug("paymentQueue purchasing"); LoadingAlert.shared.setText(text: "购买中".localized()) break; @unknown default: AppDelegate.log.debug("paymentQueue nknown default\(transaction.transactionState)"); break } } }