Look for an email from MapFactor or their payment processor (like Share-it or MyCommerce).
Pirated keys are usually blacklisted quickly. Because MapFactor requires regular map updates to be useful, a "cracked" version will quickly become outdated and provide inaccurate navigation.
Once the key is verified, the software will allow you to download the professional map data associated with that license. A Warning on "Free" Product Keys and Cracks