I: if you are using a password, you will be able to access it and then you will be able to check it. If you are not using a password, you will be able to access it and then you will be able to access it. There are two possibilities:
Ii: the network is unstable
Iii: the equipment configuration does not meet the minimum configuration requirements
Passwords are case sensitive, so please check that you have not accidentally enabled your Caps Lock key.
If you are both a teacher and the nominated administrator for your site, please check that you are using the correct teacher details.