So sorry about that! I had a setting toggled incorrectly on the backend. First time mistake 🙃. I have just fixed it. If you refresh your download page or check your itch.io library, the Activation Code should now be visible and accessible to you. Let me know if you still have any trouble seeing it and I'll send it to you directly.
Maybe, I can't find away to direct msg you on itch. You can go to my site www.brandonallen.art and send me a msg through the contact page.