When I go to 'campaing' (sic) and select the first area and first opponent, I get brought to a screen that shows a list of my cards but with seemingly no option to proceed. If I navigate to each card manually I can equip up to 5 of them, but then pressing 'confirm' on any of them just unequips them, and no other keys do anything, including escape. If someone could please tell me what I'm supposed to do to actually play this game I would appreciate it....