Country is not translated – WPML

Hello,

I have a problem with Venue. My webste is in German language and i have two more languages, Italian and English. Plugin is working ok in all languages, but problem is when I select country. While editing event in German language, I can select country written in English. I have check .po files there are translation for countries but not working. Even I tried to translate that with WPML string translation, but no success.

Can you tell me, what can be problem?