Last moth I booked UA2069 EWR-LAX for April 30 in Premium Economy, but it looks like they swapped 777s and now have me in Economy+. Obviously that happens, but now it's not letting me change to other E+ seats without charging me. That's an error, right?

Edit: I booked through chase into R, but it looks like they changed it to Y. I should have recourse with either Chase or United, no?

Edit 2: Called United direct and they switched me to an earlier flight in R. Thank you for letting me scream into the FT void!