I have a flight, #1925 EWR-SAT on Frida June 24. It is booked in Y and under my reservation it says "Premier Instant Upgrade Fare
Confirm upgrade now". When I click upgrade now I get an error message of: ! We're sorry. All segments are no longer available for upgrades. When I search for a new flight it shows 3 tickets available for first class. I called but the rep said for some reason she cant and to keep trying. What fare bucket do these upgrades fall into? Just so I know what to look for what opens up. I have never gotten one of these fares before.... Thanks