You are most likely not doing anything wrong....other than using the outside coax connection. It appears that this connection is not satellite capable. Forest River has put a splitter in the line after this connection which makes it unusable for sat TV (Directv or Dish). You most likely will have to bring your sat cable in thru a window and connect direct to you receiver.
Everyone is good at something... I happen to be a good bad example.
2016 Forester 3011DSF