I don't think there is any point in using the app now. It's been "enhanced" to point of being almost useless. I tried adding a booking yesterday and couldn't - because it was made by my wife and so has her e-mail address, not mine. My existing bookings no longer show all the useful information such as ticket numbers etc. It's a real shame as I used to use it a lot. It was also particularly good at notifying you of the gate at LHR well before it appeared on the information screens!