Hey there. This category is for questions about Itch.io itself. Your best bet is to ask the creator. There's a troubleshooting section on the game's page that says,
WINDOWS 8 USERS: FAITH is known to have game-breaking graphics issues for Windows 8 users with onboard Intel HD graphics cards like the Intel HD Graphics 4000. I highly recommend downloading and playing the demo to see if you get any graphical issues.
To report bugs or compatibility issues, please send an email to: Airdorf(at)gmail(dot)com. Please don't report bugs or crashes in the comments!
Does any of that apply to you? Did you download and test the demo first?
As a last resort, you can still e-mail support and ask for a refund within a week. Hope this helps!