I always fly Delta because based on experience, they're the best airline. Unfortunately whoever is handling the development for this app is not the best, if anything they're the scourge of an otherwise highly convenient resource to use if you fly Delta often. I'm assuming this developer is on contract and they're on contract at an incredibly low rate, meaning low quality of work. If you're going to push an update, make sure it doesn't render the app completely useless to customers.