Supporting on patreon gives you access to the game along with other benefits specific to patreon alone. You can purchase the game right here on itch for $4.99
Viewing post in Do I have to pay to get the full version?
Paying on Itch.io will give you the full version. The reason It's crashing Is because current the game Is trying to check for the next Kin to give you for leveling up but the next Kin doesn't actually exist. I'm working on fixing this bug right now and hoping to have a patch out before the end of the weekend.