Language based images

Garmin has approved my new application just a couple of hours ago. I have extended the IQ STORE page of the application by more languages and added the language based screenshots to each language. But on the IQ STORE webpage  only the last added images are used by all languages. E.g. the last added were the images with german text. Now the application offers only the german language for any other language on the webpage. How shall I add proper language based image to each language? The images are named e.g. app-image-en.jpg, app-image-de.jpg etc.