What to do in that case:

• The domain user associated with Clickker should also be created as a user in the administration, preferably with the role "Administrator".
• You need to authorise within the administration the MAC address of the machine on which Clickker is installed.
  To do so, right-click the Exact Globe shortcut on that PC/server and choose "Run as administrator". Then go to the menu path System - HR & Security - Workstations and click the "Add services" button. The button then changes to "Remove services" and the screen will remain blank if there was nothing on the screen.
  
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