Is it under a different name on Steam? As when I search for it now, it does not come up there.
And yes, the moment you charge for it, it's no longer a demo. If it's early access, make sure that is clear on everything.
All right! Would you like me to give you access to a free copy of it? If so, how? Also, the Steam page isn't live yet. It is because setting it up takes time, I am awaiting its approval, and I may currently need to add a trailer, which I don't have. Would you like me to send you a link to claim? I will also change the writing here from calling it a "demo" to "Early Access."