In order to use WorldLingo machine translator you need to purchase user account for WorldLingo service. Without a proper user account Sisulizer is using WorldLingo's test mode. The test mode translates strings but the translated strings are in random language and not the language is specified. This means that id you are translating from German column you end up getting French, Spanish, Swedish, Dutch, etc translations instead of German translations.
To purchase WorldLingo account go to account page.