Click on the 3DS icon ibn the left top corner.
Next please go to “Resources” and click on “Licensing”
A new window pops up
Move the bar at the button to the right side until you see “Deactivate”(surround red)
Double click on the red icon (surround blue)
A security messages pops up. Please click on yes
Now you can deactivate the license by clicking on “Deactivate” (surround red)
If you have any problems please send a email to email@example.com