When you have purchased a NATview license then this is the place to enter it.
License holder
Enter the licnese holder name as stated in the license email.
If the email creator used exclamation marks - ignore them, please!
License key
Enter the complete license key as one single string.
Better copy and paste it! Don't copy the exclamation marks here, too!
License key file
If you received an email with an attached license key file then enter
the license holder and read the license key from the file.