Add SmartFTP to my laptop

I recently bought a laptop and am trying to download my licensed version to it. I am getting an error on the license key screen when I enter the number. What next?

Dear chein ..

Please proceed as following:

1. Install SmartFTP on your laptop by going to: https://www.smartftp.com/download
2. Activate SmartFTP with your license key. Run the automatic license key setup which automatically install the license key. You can resend your license key email at: https://www.smartftp.com/purchase/lost.php
It contains a link to the license key setup.

I hope this helps.
Regards,
Mat