Hi, please message me on Kickstarter and we'll get it straightened out!
Okay, looks like this issue was not related to Kickstarter purchases but instead was a "send keys to buyers" option I'd checked by mistake. Keys will no longer be sent to people who buy this game - they should just be able to download the files from Itch. (for those who got the bad key, a direct download should still be an option for you!)