Maybe the card was damaged instead of being a fake one...happens, rarely but it happens...
you sure you're using the correct directory for the titlekeys file? (delete root/freeshop, it is not used and can cause issues)
I think that the Special Edition only exists in physical format, hence why it doesn't exist digitally yet nor you can get DLCs through it...
I have that installed too, I'm thinking about getting conquest/birthright and have the auto-updates instead of the manual special one...you're gonna have everything installed in one place anyways, and maybe you can move the save using JK manager to top it...