u/Far-Studio460

Flying back home to PIT from LHR on British Airways next month. This will be our first time flying BA since I usually stick with AA metal. Figured I’d switch it up since they’re also One World alliance to see what, if any differences in PE (from the reviews I’ve read, the bar seems low). Anywho, my wife and I are booked in their PE product (aka World Traveller Plus) in seats 21A & 21B but I don’t see that row existing on any BA 788 configuration they have for premium economy? Row 21 looks like regular economy from all of the seat maps I’ve seen. Is this correct and just mislabeled somehow? The BA app is horrendous btw.
TIA