Hey Scotvince, sorry for the delay in response, I only now received a notification about your comment.
I'm sorry to hear that, I tried it myself now and everything works as supposed to with my itch.io links.
Please forward the e-mail you received about Early Preview Version 4.2 being available (the one with the itch.io links we send out to our Kickstarter and IndieGoGo backers with Firestarter tier and higher) to andrej@poeticstudio.com, so that I can check if your links work.