I KNOW ! where do I put that ??? tell me the instruction for the admin panel What version are you running? This is for IP.B 3 https://www.invisionpower.com/support/guides/_/spam-security-and-privacy/question-and-answer-challenge-r8
Your topic view format is wrong. You have to change it. <span class='ft'>{title}:</span> <span class='fc'><img src='yourdomain/public/style_images/imgs/country/{key}.png' alt='Country Flag' title='{key}' /></span>