Originally Posted by
Often1
As a data point, was there a fare difference which was waived or is it that there simply was no fare difference as an add/collect. If the latter, that is not OP's situation (necessarily).
When I looked up the fare separately, it would have been higher.
The online version showed me ALL the flights for the day as "available" and allowed me to pick the one I wanted. I dropped a late evening flight that was the cheapest to the preferred mid day flight. My flight had not even been cancelled.