Group 1 - The core issue is that Pinduoduo's customer service chat function experienced a sudden outage, displaying a message that the "chat function has been disabled" [1] - Most users across the platform were unable to access the customer service feature, with only a few reporting normal functionality [3] - The outage is speculated to be due to regional server fluctuations or a phased restoration of services, with no official response from Pinduoduo at the time of reporting [6]