Group 1 - The article discusses the issue of the "Confirm" button being grayed out when a new taxpayer is registered, highlighting the reasons and solutions for this problem [3] - One reason for the grayed-out button is that the taxpayer name was entered but the "Enter" key was not pressed, preventing the system from retrieving relevant information [3] - The correct procedure involves pressing the "Enter" key after entering the taxpayer name, which initiates a search and allows the user to select the correct name to proceed with mobile verification [3]