Hi, thanks for playing.
You almost got it, maybe I didn't make it clear enough that the number in a box will multiply the whole thing
[2] Water,Wind -> 2 Water and 2 Wind
So, the correct answer for 6. is as the image below. Both have 1 Earth / 2 Water / 2 Wind
By the way, there are multiple correct answers. I didn't restrict that you need to use the smallest number in this version.