I tried 2 times with user ID newstudent with the PW I had got. It does work for newstudent1 but not for newstudent. I get this message:

You have entered an invalid username or password. Please press the back button, enter the correct details and try again. Don't forget that the password is case sensitive. Forgotten your password? Click here!

You have used 2 out of 5 login attempts. After all 5 have been used, you will be unable to login for 15 minutes.