Recently, I added In-app purchase function into our app. When the status of app was  changed  to the ready for sale, I tried In-App purchase at Device. What was happening?😨

Error was display and can’t buy it. Most bad things was that I can’t not debug on the device + In-App purchase prod server. I was looking for clues, but I couldn’t find out solution. After roughly 4hour, I tried again. This time success completed. So, I should be wait a couple of hours after app status has changed to the sale.😊

Note: this screenshot taken on the simulator.