I see BA's app and website is as stable as ever!! In other words crap!!
Booking a flight via ba.com, the website is absolutely dragging...so slow it takes me up to 30 mins to book the actual flight!
However, the flight appears not to be booked, when I receive a message along the lines of "there was a problem with your payment method, please call our customer service team or try again"
Upon trying again, I received a notification from my bank that a transaction had been made by BA, after checking my bookings it appeared the flight had actually been booked!
When trying to add the booking to the app, it cannot be retrieved...this isn't a new problem, I always have to check in and acquire my boarding passes from the website these days.
But I could have easily tried to book the same flight or a similar timed flight again and not known the original booking had worked, if I hadn't received the bank's transaction notification!