We have a blog (listing page + post) in 5 different languages. On the menu header there's a language switcher. At first, we only had 3 different languages (English, French, German) all shown as follow "EN" "FR" "DE". However, we added Italian and Spanish at some point, and in the menu header they are shown differently "Italian" and "Spanish".
Is there a way to change that an unify everything (in the design tool?) Thanks for your help
It sounds like this is set up in your template. If you open the template in the design view and find that field, you should be able to update the name that displays in the list.