Submitted an App to App Store review. Had a few issues which were resolved. App was then approved but showing as "Developer removed from sale" which I certainly did not do. Contacted support and was transferred to a supervisor. All the supervisor would say is resubmit.. Anyone experienced this or have any ideas what's up?

I am looking for some insight and an assist (planning to test in-app purchase with TestFlight) - all works in Xcode. I have created my very first in-App purchases App (I have other paid apps in App store) Under Distribution tab in the Monetization section i created the in-app purchases item. I completed all fields and the status is now changed from waiting fior metadata to ready to submit.. Per my readings the in-app purchase item would be reviewed with a new version of the App. I uploaded a new version, added sandbox tester and submitted it for review.. My App in TestFlight now shows status of Testing, but the in-App purchase still shows waiting for review. On the Distribution tab the "Add for Review" button is active but it seems a bit illogical for me to click it as the in-App purchases is the only completed item on my App's distribution tab (I am not ready to submit for review yet..) So as illogical as it appears, is this the way to get your first in-App purchase approved?

This is my first in-App purchase App. I have other paid Apps and my business status are all active. I tested the in-app purchases on my devices using a StoreKit file and Xcode. I removed the StoreKit file from run configuration Scheme, I added in-app purchases to Signing & Capabilities then archived, validated and uploaded build to AppStore connect. I added two testers - a sandbox account (gmail subaddressed) and another gmail account. When I try to load the App using TestFlight I immediately get "couldn't load App". This is an App that previously had no in-app purchases. I added in-app after version 1 (tested ok in TestFlight). Now trying to test version 3 in TestFlight. Any insight would be appreciated.