: Find the 20-digit unlock key sent to your email after purchase. If you lost it, you can use the Key Recovery Tool on the official website. Open Synthesia : Launch the application on your PC or Mac. Enter the Key : Click on the Settings gear icon. Select the Unlock Synthesia tab (or "Upgrade"). Copy and paste your key into the text field.
Using your Synthesia 10.9 Unlock Key is easy. Here's a step-by-step guide: Synthesia 10.9 Unlock Key