In App Purchase IOS

Hi ,

I’ve read all the document regarding this. While testing the app after I install using IPP, the purchase button didn’t even response and only failed. Is reading and restoring information compulsory? I have all my provision set and is all valid following the iOS guidelines in unreal engine. Is the 2 lines of the iOS log module warning doesn’t matter as it seems like not loading the onlinesubsystem. Is it compulsory to upload the build IPA to iTunes connect to test using distribution provision and shipping packaging? Please advise. And I did setup the in-app purchase items and link to my app. But in make-in app purchase mode always go to failure. I’ll update all the screenshots of these .