I got it through the Kickstarter for EA #2. I'm a Physical Legacy backer.
If you got it through the Kickstarter and downloaded it before with this account, you should be able to download it again to get the new version :) If you haven't downloaded it before: I sent all Legacy backers a download key after the campaign was done, so you should have an email from itch.io with the key (from March 2023). I hope this helps, otherwise let me know! :)