I think that most folks with "Flippy-Weeks" have (or can see) their VIN through the www.nissanusa.com/owners site.
Usually, you login there with the same User ID and pwd that you use to see your dashboard.
Also, on your dashboard, the Activate CARWINGS option should be enabled, and it probably/apparently/possibly works even if it gives you an error and appears to have failed.
When you open the Owner's page (link above) there should be a LEAF named "MyLeaf" defined, showing its VIN. You can edit the name and a few other details.