Hey there! We're sorry you're having troubles with the download. Just so we can better help, you could message us in our Discord or on Twitter or BSky. If not, can you explain which versions you are trying to use so we can better narrow down the cause. Thank you!
Viewing post in A Fall from Grace - Build 8 - General Release comments
So after some quick research, what I've found is that you might be trying to install through the Itch app. The app can't detect games that have files linking to another website, which is why it gives you the error "This title is hosted on an incompatible third party website!" In order to download the game, you need to do it from the browser rather than the app. Let us know if this works!