Solution
In order to receive a license, you will need to provide the serial number of your device and the register code.
You can find the register code from the MPManager software, click on the
Register button and you will see the register code you need to provide. This consists of 15 digits.
Once you have the above required information, you can send an email to mp-helpdesk@ni.com. You will receive an email with the license.
You will have to insert the provided license (the 2 lines) in the window under the register code.