You can view your licence key by logging in at https://accounts.flashbackrecorder.com/Login.aspx
FlashBack Pro 5 licence owners will find two license keys displayed – one for FlashBack Pro 5 and one for FlashBack Connect, our movie-hosting platform where you can share your recordings online.
To register your app, make sure it is the FlashBack Pro 5 license key that you copy and paste into the app.