Group 1 - The core issue revolves around Anker's power bank recall plan, where customers reported being unable to take their power banks on flights due to the absence of a 3C certification, despite their products not being part of the recall [1][3] - The Civil Aviation Administration of China announced a ban on carrying power banks without clear 3C markings starting June 28, which prompted Anker to initiate a recall for certain models, offering free exchanges [3][5] - Customers, like Ms. Li, faced challenges when trying to board flights with their Anker power banks, as airport security insisted on the presence of a clear 3C mark, disregarding Anker's statement about the safety of the product [5] Group 2 - Anker provided a statement to airport security to affirm the safety of their power banks, but this did not guarantee passage through security checks [5] - Customer service from Anker has been unresponsive regarding compensation for shipping costs or offering replacement services for affected customers [5]