[Caspian]

You're allowed to do them after that, but you usually have to max out your rank points in order to receive them. When you go to the menu and click the top two buttons (can't remember the names) it tells you your title at the top, then your current Home Point, rank, and a blue bar that may be a little full, nearly full, or all the way full. You have to have it all the way full to get all the missions for the next rank. I think I was kinda off on my last post. Iirc you can usually do the first mission or two right off, but usually they won't get you enough points or whatever you wanna call it to give you the last mission in rank. At that point you can either repeat past missions or trade crystals. I always chose the latter since its quick, cheap, and easy.