Hello, So I bought majesy two when it came out but havent played since after i beat the campaign and it became dreadfully boring. Now i saw the kingmaker expansion and i want to buy it on steam. So i installed my M2 retail version and the serial key worked and everything. Then i went to activate it on steam so i could buy the expansion. Says the key is invalid, am i looking at the wrong key or something? Btw i have tried all the common mistakes many times I.E. O <--> 0 abd such. Help please & thanks