Am in the middle of a trip and trying to change my seats for the return. When I go in on both the app and website, it tells me that my reservation has a flight that has been flown (yes) or am in the departure window (nope - flight is tomorrow) and therefor cannot make any changes online and have to chat or call in. Why is it not allowing me to change seats? Anyone else have this problem. Chat agent did not think this was an issue b