Same thing happened to me with all my online reservations a few weeks ago... I still have no idea what happened... But when I called first thing the next morning all was ok...Reservations had everything I had booked online so it was all good.But they had no idea why my reservations had disappeared online.And they still are not there!! I lost sleep that night but all was well the next morning!
I think it's all good just call in the morning!!!