ExternalPurchaseCustomLink.isEligible always returns false although the documented Japan requirements are satisfied. Environment: iPhone, iOS 26.7 Bundle ID: com.audio.yoho.ios Storefront: JPN (143462) Japan Sandbox account canMakePayments: true AppTransaction: Sandbox, verified Signed entitlement: com.apple.developer.storekit.custom-purchase-link.allowed-regions = ["jp"] ExternalPurchase.canPresent also returns false. Has anyone successfully tested this API in a development-signed Sandbox build? Feedback Assistant: ExternalPurchaseCustomLink.isEligible always returns false although the documented Japan requirements are satisfied. Environment: iPhone, iOS 26.7 Bundle ID: com.audio.yoho.ios Storefront: JPN (143462) Japan Sandbox account canMakePayments: true AppTransaction: Sandbox, verified Signed entitlement: com.apple.developer.storekit.custom-purchase-link.allowed-regions = ["jp"] ExternalPurchase.canPresent also returns false. Has anyone successfully tested this API in a development-signed Sandbox build? Feedback Assistant: FB24902861