My wife has some VN ticketed flights, of which the first leg is in business operated by AF from CDG as a codeshare with a VN flight number. Unsurprisingly the Vietnam Airlines web site won't let us reserve seats nor meals for that AF codeshare flight. More surprising that with her AF FB number registered in the VN booking, the AF website still doesn't recognise the booking nor VN PNR nor ticket number.
Do i need to get the AF PNR, and being cheeky can i call the PSL as FB gold to get it? Or do i need to call the VN CSL?