I'm one of those that has purchased AI war from a few different places, such as (former) Impulse, GamersGate, and I'm pretty sure from Arcen directly. Steam tells me that my keys for the base game are already in use (I haven't tried the others, was also a long time between getting them and trying steam), so steam keys are literally useless to me for AI War. Before I was able to use license keys for any demo version, but since... Ancient Shadows? I have had to download the expansions as they didn't seem to use keys.
Now here is the problem: GamersGate, from who I have purchased now 3 expansions from (AS, VotM and now DoW) I was always able to download the expansion. but NOW they are replaced the previously accessible downloads with steam keys. Fortunately I still have the AS and VotM downloads from their last install, but I cannot get Destroyer of Worlds downloaded because steam keys. Is there any way to resolve this here OR do I need to contact GamersGate (from their removal of previously available downloads, I don't think that will work well)?
Screenshot attachment is from my GamersGate account showing the problem.