Hi @pieterlauryssen ,
Because your language convert is saved as local storage and added by the application, so it will be hard to tell if the first load is Netherlands or French.
So to be able to set all cases, you need to contact the app, I can only help you to change when I know the exact loaded language. If you know the loading language, you can use JS to catch the click and display the image. The additional code will be executed in the theme.js file. Hope it clear to you.