Just to give my 2 cents here. Other games that do what you are trying to do here don't sell a paid copy on Itch. They only release the free version here, and direct anyone who wants early access to the Patreon to pay it there. That way it's clear that if you are paying, it's on a monthly basis, and if you are here for free access, you wait for the free release on Patreon. I'll admit, I was also confused by how you are doing it. I thought paying for it on itch was paying for the game in perpetuity