Hi, hoping someone knows the answer. I just bought a United economy ticket through the Chase portal with Chase UR, but I want to buy an Economy Plus seat upgrade which is $152. It asked me to choose a seat and I chose the one I want but it didn't show prices and never charged me. So I assume I'm not really getting that premium seat. How will I be able to pay for that seat? So far the ticket isn't showing up as a trip in my United.com account. Will it eventually show up there so I can buy that seat? Otherwise I want to cancel the ticket and pay cash through United.com with the seat.