What's up with that?
Armenia is not in Europe, when you have US Virgin Islands the others should be the British Virgin Islands and where is Kosovo in this?
I also don't see the necessity for a yellow box in this quiz.
Regarding spelling, it's explicitly said in the description that only the correct spellings are accepted – I know it's more strict than what is generally accepted on JetPunk, but that's by choice. Yellow box is also by choice, so you have to know which capital belongs to which country, not just list them all.
While USVI are officially named "Virgin Islands of the United States", British Virgin Islands are officially named simply "Virgin Islands".
Kosovo is not in ISO, that's why it's missing here too.