Reservations, My Reservations, Reservation Inquiry for Guests, entered Reservation Number & Departure Date

The ticket is an award ticket not booked via Asiana Airlines. The seat selection process worked like a charm last week but not today. I can view the e-ticket and determine the current seats. The current seats are not the seats selected last week. The seats are business class seats so not the highest priority but I would like to be able to select seats online.