AirParrot 2 uses a new-style license key. This key is much shorter than the original key for AirParrot. These are separate license keys that are purchased independently.
If your license key doesn't fit in the registration box, it's likely you've got an AirParrot key, not an AirParrot 2 key.
New style keys follow this format:
Old style keys are very long strings of random characters. These keys often exceed 100 characters.
If you've got an old key, you can still use AirParrot! You can download AirParrot (not AirParrot 2) from here.
AirParrot 2 is a completely redesigned product. It adds new features like video and audio streaming, Chromecast connections and more. Check out the full feature comparison of AirParrot and AirParrot 2.