AppStore problem with language of iOS Cordova apps always English and German
In the app's Info.plist, add an array named CFBundleLocalizations and add strings with the names of the localizations you have available in your app, such as ‘es’.

CFBundleLocalizations (Array - iOS, OS X) identifies the localizations handled manually by your app. If your executable is unbundled or does not use the existing bundle localization mechanism, you can include this key to specify the localizations your app does handle.
Each entry in this property’s array is a string identifying the language name or ISO language designator of the supported localization. See “Language and Locale Designations” in Internationalization and Localization Guide in Internationalization Documentation for information on how to specify language designators.

Source: https://developer.apple.com/library/mac/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html