I have received a reply from Marcin:
… all texts can be translated via shortcode. For example:
[wise-chat message_save=”Save text” message_insert_emoticon=”Insert text” … ]
You can prepare your own translation for every language you support. Please check all the messages:
http://kaine.pl/projects/wp-plugins/wise-chat/documentation/shortcode/#Localization-LocalizationSettings
So Marcin – thanks again for your reply.
Alex
Hey efrap, did you find a solution? (It also has with dropdown list.)