this is a common problem.
Here's how to fix it:
1) try to retrieve your reservation in the normal way
2) close the pop-up box
2) have a look at the address bar in your browswer, you will see about 2/3rds of the way along a date embedded into the text
3) you need to play around with this date either: a) change the date to the day before it currently shows (for example if it is
20120918, change it to
20120917), or b) if you have made a
change to the booking, enter the date as you are now going to travel (for exampe, you were originally booked on 201209
18, but changed your reservation a week earlier, the address bar will still show
20120918, you will need to enter 201209
11)
4) hit 'enter'
5) your reservation will now show in full
It's some quirk where the date defaults to the day after - might be something to do with the date line change between AU and the USA. In the case of changed booking it seems to keep the original date.