Hi canbalkya,
Could you please provide some examples of how you're providing localized text, and how you're testing the app?
If you're able to submit a sample app using Feedback Assistant (and then letting me know the ID number of the problem you submitted), that'd be great. In the meantime, I'd suggest (if you haven't already): Switching languages on the device to a language other than English; Turning on VoiceOver; Confirming that VoiceOver is not currently announcing in English; Switching to the app; Confirming that the app is not displaying its labels in English; Confirming that VoiceOver is also announcing your app's content in a language other than English.
Thanks!