Its been quite a while since I've played. And apparently I had to convert all my "Legacy Items" (No idea what that means). And I did, but now I am unable to open boxes or do anything because I have no extra slots. But all my slots are filled by 371 Power Units, but I have no idea how to get rid of them.
 "Supermechs"){kind=icon}
 "Curio Quest"){kind=icon}
 "Monster Saga"){kind=icon}
 "My Little Army"){kind=icon}
 "Elements"){kind=icon}
 "Crunchball 3000"){kind=icon}