I was checking my divides in find my iPhone, my roommate and I share the same account. Luckily it was only a test, I can see my iPad and iPhone in the same place in the map because I'm home, but when I look my roommate's iPhone it shows no map. What do I do if in reality my divide is lost and I want to see it in the map but it doesn't show? Is there another way to do it? Thank u.