Mount And Blade Where Enter The Product Key MOUNT AND BLADE QUESTION PLEASE HELP!!!?

MOUNT AND BLADE QUESTION PLEASE HELP!!!? - mount and blade where enter the product key

So I did the 4 heroes Deshavi, Bunduki, and Aley. Whenever I to fight, but never there, except that Deshavi alone. When PPL say how many people in my army before the battle, including, but when I go into the fight just seems Deshavi ... im not sure what is wrong. PLEASE HELP