Ambassador, British Airways; FlyerTalk Posting Legend
Join Date: Apr 2012
Location: Leeds, UK
Programs: BA GGL/CCR, GfL, HH Diamond
Posts: 43,247
Could be. Are you sure the seats you are trying to select are free? RJ has a habit sometimes of not showing what is taken and allowing you to select, then just erroring when you try and confirm if they are already taken.