1. It is not clear WHERE the country has to be selected: in the left or in the right column!
2. If I don't change anything from the standard selection (ALL countries left, NO country right) then my ads are shown.
I want to block the ad for only ONE country. But no matter if I place this one country alone in the right or in the left column, the add is shown in NO country at all!
I think the whole country selecting functionality is faulty!!! :(