im kinda late to this as well, but you didnt make it seem like you actually were indoced with nsa. For a lot of these fsp agencies you dont actually have the fsp portion until you have indoced with them with the fsp. You should have accepted the fjo and indoced and you most likely would have been good from that point onwards. This is the last step basically once you indoc that one time you should be good to use your fsp anywhere else that accepts it from that point onwards.