1, user name or password is wrong, both user name and password are wrong. It's easy to solve, just get the right one;

2. The school is not registered. It is more troublesome and may not be admitted;

3. The system error is the problem of the website itself. It is also very easy to solve, as long as the system error is corrected;

4. Computer problems. It is suggested to report the situation to the school office and solve it by the school office. Just repair the computer or replace it with a qualified computer.