Also happened to me. My build rejected for other reasons.
Iaps and subscriptions automatically rejected with it. System said "Developer action required" with no other explanation. I just added blank space character in every localization to be able to resubmit (what a developer action). Then my build was approved and now live on app store.
But guess what, all in app purchases was stuck on waiting for review. To be exact; they automatically changed to In Review and got stuck.
Luckily I thought something like this might happen and added a switch to show/hide payment view remotely. Still this is very very unsatisfying experience for a developer especially now this is about monetization.
Anyways, I called developer support and he raised a ticket to review team. Hope they figure this out quickly.
Topic:
App & System Services
SubTopic:
StoreKit
Tags: