You'd get a better response in the Star forum.

You should be able to use the lounges and Bus class checkin. Many of the carriers (UA comes to mind first) have two fields -- one for the one to use status, and one for the account to earn miles for the flight.

You should be able to update that FF number now, but you could also do it at checkin. Once it's been credited, you generally can't move them to another program.