I bought the v0.5 and have also been a patron for a while, but its not letting me download this version? I also tried to redownload it from my library, but it said I needed to pay $10.
Normally you can always download the game from your library. Make sure you're connected to your account. If it doesn't work, try using the mail you got from itch after you bought the game, it should have a link to download the game.
If nothing works, you should try to contact support@itch.io
