Its not the app or the website that's the issue, both are frontends to a very dated backend system. Sabre was created in the 1950s, its been passed around through acquisitions many times since then and as you might expect a website or mobile apps weren't exactly top of mind in those days. While it's surely had some "upgrades" along the way there's only so much you can do with these old systems; you cannot attach cameras and a LIDR to a Pinto and expect it be a Tesla. At some point you have to bite the bullet and build/buy a new system, this would require a large investment and leadership...so enjoy the pretty photo backgrounds.