Originally Posted by
ESpen36
This is not new. Once you attempt to check in online via ANY means, you will not be able to complete any further seat changes or upgrade requests online or via phone reservations. Only airport agents have the power at that point.
Great, but what if the checkin process fails? What if it actually "checks you in" but fails to add you to upgrade standby as has happened several times for me on the iPhone app?
Is there just NO remedy????? I will have to wait until the morning to get on the upgrade list along with everyone else going ORD->DFW???