After our app review is accepted, it has been stuck in "Processing for Distribution" mode for over 24 hours. Usually we've seen a new app changed for "Processing for Distribution" to "Ready for distribution" in under 10 minutes. Does anyone encounter a similar issue and how to proceed?

Hello, After submission of a new app, we got review feedback that the IAP doesn't work. Upon further investigation, one issue we found is that the IAP is not added to the app submission as mentioned in https://help.apple.com/app-store-connect/#/dev1986a0e5c (submit IAP for the first time section). However, in our app store connect we found that there is no button to add IAP purchase as shown in the above page. Is there a possible glitch in App Store Connect that does not show the add IAP section? Thanks.