Hi, I released a demo of my game about 6 months and it has about 5K downloads. Since then I've moved the game into alpha and it now costs $10. I will release the game on Steam in about 2 months and want to distribute Steam keys to people who purchased the game here, but I'm not sure if Steam keys will be available to everyone who downloaded it for free back when it was a demo or to those who donated less than $10.

Could someone confirm if keys will only be available to those who purchased the game or how to manage that?

Thank you!