We use StoreKit’s ExternalPurchaseCustomLink for an external card-payment flow available in Germany. On an iPad simulator, the app reports “This payment method is currently available only in the German App Store” and stops before showing Apple’s disclosure sheet or opening Stripe. On an iPhone installation, the disclosure sheet and Stripe have opened, but we have not confirmed that both devices use the same build or App Store storefront.
The app is intended for distribution in Germany. Can App Review test an iPad app using a storefront other than Germany? Which Storefront does ExternalPurchaseCustomLink.isEligible use during App Review, and what should developers provide so reviewers can exercise a Germany-only flow?