Are you using your usual UAL username and password?
Can you log into Webmail and Moodle?
Almost all log-in problems are related to users’ general UAL user accounts – expired passwords for example – rather than anything to do with workflow.
You could try resetting your password here: https://pss.arts.ac.uk/pwm/private/Login
Or contact IT for support on 0207 514 9898 or email at email@example.com.
If you are a short-course online student, please contact your course administrator.