Why is my Tencent Health Guardian platform game banned and inexplicably opened by myself?

This is because the account has no real-name authentication or the real-name person is underage. In this case, only unlimited play under the anti-addiction system is set. No matter how long it is set, as long as it is a minor, it will be included in the anti-addiction system, and the anti-addiction system will be started according to time unless the child is given a real name.