As a result of the investigation, I got an answer to the first question: Hebrew is supported. I have installed the Netflix app, which also supports "External Link Account Entitlement." Given my current system settings, the Netflix app displays content in Hebrew. If I change the language to English, it displays in English. However, in my own app—installed via Xcode or TestFlight—I always see English. two questions left 2. Could the absence of Hebrew be a specific behavior related to using Xcode and TestFlight, while the language will display correctly in the App Store version? 3. Which account settings influence the language of the triggered modal window? Any help would be greatly appreciated. Thank you.