Are you sure the problem is not caused by your equipment? Then contact the Service Desk by telephone.
You can reach us on working days from 7:00 AM to 5:00 PM (Amsterdam time) on +31 (0)85 0014 101.
Important: when you report the issue, describe as precisely as possible what you were trying to do and, if an error message is shown on screen, what that error message says. This helps us assist you as effectively as possible.