Hi Gonzo63,
A warm welcome and thanks for posting on our community forums. If our web page is under maintenance, you will not be able to register until this work has been carried out and our website is back up and running.
Can we ask if you have tried again this morning?
You can use the link here https://www.virginmedia.com/my-virgin-media/register
If you're still encountering issues, please come back to us.
Kind regards Jodi.