How to access your Purchase on Itch.Io
After every purchase, two things happen:
You're immediately sent an email from support@itch.io confirming your transaction.
This email contains a link to your purchase page.
Your browser will redirect to your purchase page, which includes all downloads.
If you can’t find your purchase, first check your inbox. Verify that your spam detector didn’t hide it, or you didn’t archive it by accident.
If you need any further help, please don't hesitate to comment again or use the link above to contact Itch.io Support.
I hope this helped you.

