I'm trying to make a cash booking (PE ATH-KUL r/t) on ba.com, but not logged in as I want to use my Qantas FF No for this ticket.

All goes well up to select seats, but next when I click the "Extras" button it has a think for about 20 seconds and then declares "Something Went Wrong - Please Try Again".

No matter how many times I try again, with different browsers, different PC's and different data/WiFi sources, I keep getting this error message.

I have no idea why BA doesn't want me to give it 1300 Euro. Does anyone have any ideas?