Fallen Enchantress Cheats
What do you mean the extension unlock doesn't work? Do you mean the build in cheats? You can't use the shortcut created by steam, you have to go to the game folder to create your own shortcut of legendaryheroes.exe than add the -cheat on the short cut. (for example "D:\Games\Steam\steamapps\common\FE Legendary Heroes\LegendaryHeroes.exe" -cheat )
firewall and other security software.
on trainer and game.
version and distribution.