Boy, this is difficult. I have a flight booked with PlusPoints attached for this upcoming Tuesday. I am not showing any possibility to upgrade with cash. Both the app and web say "Not Available" even thought it is. A family member is traveling with me without PlusPoints and the upgrade price is very reasonable. Is the only option to remove the PlusPoints and hopefully the upgrade offer will populate? The other issue is that the second leg of the itinerary is already upgraded. Not sure if I will lose that upgrade. I didn't realize this was so difficult. I even tried to Change Flights and it is not showing leg where I am already booked in coach with the PP attached. It's amazing you can't see the $ upgrade price. I thought UA was all about the "benjamins"? Any suggestions? I guess another option would be to just cancel the whole ticket and rebook. Surprised at the difficulty. And, hate how the app punts me to the web. Why?