Originally Posted by
be_rettSEA
I've not seen the issue where you're unable to select another seat, so can't help there, but I have seen the not showing up on waitlist plenty. If you don't see yourself on the app/gate waitlist, you're not on it. To prevent it from happening, wait a good 10-15 mins before you check in for your new flight for whatever backend magic has to happen, and that generally will get you there. Calling in can help sometimes, but most cases I find agents just say "no, I see you on it" and don't do much to help. Some will put you on hold, remove you and re-add you (or something similar) and that does tend to do something, but the waiting to check-in is easier.
Thanks. I will try the re-checkng in. I too have had the verbal assurance that the phone agent says they "see me on the upgrade list" when I don't see myself on the app. I have had the successful experience of an agent uncheck me in and have me check in again.
I have presumed innocence and imagined that there is something like an administrative hold as a control against disruptions from people doing frequent SDC's or SDC's as a way to somehow game the system.