Oh, I don't mind you increasing the price. It makes sense if you keep adding stuff to the game. Its just weird that itch.io keeps telling me that I bought the game and yet withholds the paid version. And instead of paying the difference between the new price and what I already payed, it forces me to cough up the full 6$ again.
Handing over 2 or 3 $ for every major update (like once every 4 months or so?) is fine, but paying 4$ now, 6$ 6 Months later and 12$ another 6 Months later is just not cool for us early supporters. Its like an early access game on steam that keeps getting more expensive the more content it gets, but forces everyone to buy the most recent version at full price again.
I'm sorry, but I don't plan to buy the game a second, third or fourth time like this. Just feels wrong.