itch.io

I'm pretty sure he has to upload the new version to itch in order for you guys to get your updated version as I purchased the game a second time = $20 and I didn't get the updated version so I made a Pay-Pal dispute and got my $10 back since I have already purchased the game and buying it a second time is pointless

If you press on "buy" then there is a little text for those who have already purchased. You will have to put your e-mail in a box, then you will get a mail with all your purchases.

Correct!