It is very inconsiderate to advertise your game here, and offer a free demo, but not to actually sell your game here. It costs itch.io money to host your demo, but they don't get any money from sales because you've chosen to make your game Steam exclusive. Also, it's just rude to use the indie game community for exposure, but then offer nothing of value in return. Either sell your game here (preferable), or just delete this page.