I have tried to find this out for some time and it seems to not exist. I have been to the support page, and it just ask questions and tries to provide answers. Finally I found a way to open a ticket, even though it's not in the category of help I wanted. Now I cannot find any way to track that ticket.
My initial impression of the level of support provided, is that it's terrible. I can only assume NI, are hoping to make it so difficult for people, that they won't open tickets.
So NI, please tell me how I can check the status of a support ticket. What's the link, or do you not want anyone to know.