For your information:

Display name needs to be your surname and forename. No aliases.
Your unique ID can be anything you want.
If you are having difficult logging on to the system you can use your uniqueID, display name or e-mail address with your password to log on.
If you have trouble logging on then please send an e-mail to: dslogon@markj147.net indicating your problem.
If you need help to register then send me an e-mail and I shall create a user account for you.