not op, but when attempting to download/install through the itch app, there's no file to choose, so an error message pops up. not sure why the file options won't show up. i circumvented this by just downloading via browser.
Oh thats my fault. I didn't use itch.io's butler app to upload it. I still need to figure out how to do that and it's on my list of things to do. So in future it will be fixed. I'm sorry about that.