itch.io

Hmm usually with that it means your device is forbidding it. I don't remember what it was but its something in your settings saying to allow you to download off of unknown sorceres. Im sorry i dont know which setting it is since it has been a long time since i did mine. (ーー;)

Are you on PC or Mobile?

If on mobile go to settings then scroll down until you find about phone click on it then scroll until you see build number then spam click on that until you activate developer mode after that go to storage and click on your browser then allow downloads from unknown sources and that should hopefully work, if on PC idk how because I don't have one