It is not free.

Are you using A7 or A8? When you just bought it, your key works with both but you should better use A8, it's newer. The outdoor level was in A7 only.

It is known that the last A7 version crashed with A6 map entities. So until there is a new A7 patch you must recompile the map entities with A7. I think there were many A6 map entities in the outdoor level.