Hey, sorry about that. I'm not sure how the bundle works, have you received any emails maybe? From what I know you can activate/download a game through a key but I am not entirely sure if that's the case with the bundle. What you could do is post your question here: https://itch.io/board/10023/questions-support
I don't have any control over how the bundle works (from what I know) so hopefully a moderator can help you there! Please let me know if you got your issue sorted, I'll try to see what I can do if it's not resolved in a timely matter!!!