Safety education for students with learning difficulties shows the reasons why the task points are not completed;

1. The reason why the network is not connected, please check the network.

2. As the system is busy, please refresh the page.

If the website crashes, please contact the person in charge of the website in time.

4. There is a time limit. For example, some require holidays to be filled, which will be void after the start of school, and some can be filled as long as the class teacher or school security administrator authorizes them.

I suggest waiting a little longer, or checking whether it's your computer.