Very sneaky and unethical how you can't really speak to a real person to help. I tried booking a flight for me and family months in advance and after spending all that time and filling out payment, app would say that flight wasn't available anymore. Next day, I tried again in morning and now the message was that booking couldn't be completed and to try again. Went to my card statement and several pending transactions were made but booking was never possible. Went to Priceline and no problem.