It is the QR sticker below your Firewalla. The QR code has a sequence of very long numbers, which is the key to access our cloud. The QR code should be used on one Firewalla device only. If you re-use it, the previous device paired will still work, we will set it to development mode, or disabling the unit.
We don't sell the license, but if you have a need, we can get you one. (send an email firstname.lastname@example.org). Licenses are not free. Due to how licenses are paired with a physical device, we may not be able to generate licenses all the time.
If we discover one license is getting repeated use, we will block all devices associated with that license.