So if I understand, the game I purchased for testing, which became the basic game only available through Epic, is not available to Steam. So to play the game I tested on my preferred platform -- Steam. Now, to be able to play I either need to purchase the new version or deal with Epic's constant bombardment of advertising games I have no interest in or log in every time I feel like playing yours.
Thanks for the information. This is likely the last Stardock product I will invest in.