Right to the second, I failed the puzzle (LOL), but after that, it still kindly informs me very specifically that I "won a copy of the game" anyway. Again, no code.
I finally completed the puzzle, and apparently won, but because I was on mobile, I accidentally did the ol' double tap.
The message then says I already won the game (I thought it was just the gift pack?), and it doesn't display any code.
I checked the rewards list for where the code would be stored for future reference. It does not show up there. What did I win, exactly?