I have the key received from Paradox (thanks you AndrewT), but when I put the key in my Steam account I get this message:
But I have ALREADY the EU4 base game (and Imperator Rome too) and ALL of its DLCs in my Steam account, bought in Steam too. What the hell is happening??
Please first activate the original game.
The product code you've entered requires ownership of another product before activation
If you are trying to activate an expansion pack of downloadable content,please first activate the original game,then activate this additional conent.
But I have ALREADY the EU4 base game (and Imperator Rome too) and ALL of its DLCs in my Steam account, bought in Steam too. What the hell is happening??