When trying to start up PayPay App from WebView app, not PayPay App but a login screen shows up on browser. Tell me how to start up PayPay App. April 14, 2022 09:50 Updated Refer to the following document for troubleshooting on start-up: App-Invoke-handling-in-webview-(En).docx 20 KB Download Related articles Please tell me how to set redirectType. I am trying to call the PayPay payment screen in Webview, but it does not work properly. What happens if you make payment multiple times with the same merchantPaymentId? Such a phenomenon occurs that a button on the screen does not respond on WebView of the Sandbox app. Why is this happening? What is the behavior like when CashbackAPI (/v2/cashback) is executed while merchants balance is insufficient? Comments 0 comments Please sign in to leave a comment.