In the last couple of weeks I have gotten about ten of these emails where they tell me the seats have changed and they will send me a new eticket. No etickets have arrived. They also say you can view or change your seat in the app or on the site, but when I click on that reservation on the site and try to modify it, it gives me a "reservation unavailable" message and tells me to call. I just called and reached an incredibly rude rep who said, "that's because you're supposed to call." When i said, "the email didn't say to call," he said "I'm not going to argue with you about verbiage" and sent me into hold hell. Anyone else having this issue?

Edited with the answer, in case it helps anyone else: I called again and reached the same guy! But the third time was the charm and I reached a woman who was fantastic. She didn't know why either but worked it through and found out it was because of those crazy $39 sale fares. They each had to be manually rebooked as a new ticket with the price overridden. She rebooked all ten for me at the same fare and I was then able to open them online and change my seats back to the ones I wanted.