Core Viewpoint - United Airlines experienced a system failure affecting passenger check-in processes on May 2, leading to difficulties for travelers accessing the airline's website and app [1] Group 1 - Passengers reported issues with check-in procedures due to the airline's system malfunction [1] - United Airlines acknowledged the problem and stated that they are working to resolve the issue as quickly as possible [1] - The company communicated the situation through its social media channels [1]