Today, I activated on Steam Black Shark 2 and P51D what I purchased from ED webshop. But I found FC3 can not be activated, and there is no way to integrate ED version FC3 module into the Steam version FC3 DCS World. I already have FC3, and I do not want to buy Su25A and A10A again. Did not want to continue to use the ED version DCS World to run FC3. So to say there are two ways to solve this problem.
1 Make a FC3 installer, Let me can use ED version of FC3 on the Steam version DCS World.
2 Make FC3 key to activate a Season Pass, so the Steam store does not exist FC3, but players can get Su25A and subsequent expansion modules comes from FC3.