Having an issue with availability on a specific Cathay flight. Expert Flyer showing loads of availability, but AA RTW desk can't see it. I have 4 Cathay segments and 3 of them were fine (lots of availability seemingly matching what I was seeing on Expert Flyer). The one causing issue is CTS-HKG on 26 June. Expert Flyer shows D7 but AA were only seeing 1 seat.

Is there any other way of checking availability other than just calling AA to check it every now and then?