If you purchased our products on itch.io (after March 14th 2017):
Go on this page and login: https://itch.io/my-purchases
Didn't create an itch.io account yet? Click on "Looking for something you bought?"
If you purchased our products on gumroad.com (before March 14th 2017):
Then you might have received an email from itch.io with your new download key. This email has a link to get access to your purchase.
If you haven't received, or can't find, such an email: please contact us at [email protected]. We'll give you your new license.
Claim the license by creating an account on itch.io. This way you will have access to future updates through https://itch.io/my-purchases.
Find the email you received from Gumroad at the time of purchase time. This email has "You bought X" in your language in the topic.
Click on the "See the Product" link.
If you purchased our products with one of our resellers:
They would have passed you an itch.io licence link
Go on this page and login: https://itch.io/my-purchases to get back your product.