Why did Tencent's service platform for parents of minors fail in real-name authentication?

This is a system limitation. If the real-name authentication of QQ Growth Guardian platform is underage and cannot be modified, it does not meet the change requirements after submission.

In order to protect the physical and mental health of minors, users under 18 will be restricted by the anti-addiction system. The anti-addiction restriction strategy will be cancelled after adulthood (due to different types of games, please formulate specific restriction strategies (subject to the actual trigger conditions in the game).