Game detection problem on Cortex

Hello all! I have recently downloaded cortex (latest version) and already have a problem with game detection. Basically it detects only a few of my games (2 out of 11). I have tried adding games manually but whenever I click on the game and press "add" it just shows me that it has failed to add it. For experimentation I have tried to add random apps to the list to see if something was wrong with my games or the whole detection system. Any help would be appreceated :)