If your Xuyouyoujiao activation code has expired, you can follow the steps below to solve the problem:

1. Open the Xuyouyoujiao APP and click the "My" button in the lower right corner.

2. In the "My" settings interface, find and click the "Child Management" option.

3. On the child management page, you will see the "Generate Activation Code" button, click it directly.

4. The system will regenerate a new activation code, and you can use this new activation code to activate.

If the above steps don't solve the problem, you can also try the following methods:

- Contact the school administrator or class teacher: Since the activation code is usually generated and issued by the school administrator or class teacher, you can contact them to obtain a new activation code.

- Check the number of times the activation code has been used: According to the regulations of Xuyouyoujiao, each activation code can only be used successfully once. If it has been used once, the activation code will become invalid. At this time, you need to contact the administrator or class teacher again to obtain a new activation code.

- Check account status: If there is an abnormality in your account, the activation code may become invalid. In this case, you can try to contact Xueyouyoujiao’s customer service for help.