So, after completing the story for V12 so far, I decided to do the side quests. One of which is the wispy ruins badge doors. I initially thought that you were supposed to get an item as well as some lore for all 9 nine chests. However, there were some chests that have already been open before I even opened the door, leaving me with nothing except the message, "looks like someone has already been here" or smth like that. Are some chests unobtainable after a certain amount of progress has been made in the game, or is it supposed to be just like that?