Robo-FTP runs in a fully-functional evaluation mode when first installed. Once you have purchased a license, you can use the serial number to activate the software in place without re-installing. Upon successful activation, the software will run indefinitely on the machine until it is either uninstalled or the license is removed.
To begin the Activation process, open the Server Console to the License menu and click the "Activate Software License" button:
Please check the Knowledge Base on the Robo-FTP web site for updated information or help troubleshooting licensing issues.
See also: License Menu, Automatic vs. Manual Activation