When you purchase TextMessenger you will receive your license details via email.
You can either click the License button on the Trial screen, or select License from the Help menu.
The License window will be displayed.
Enter the details from your license email, specifically your Client Number, Email Address and Serial Number.
Click the Activate License button. TextMessenger will connect to our license server over the Internet so you may be prompted by your firewall software to allow the connection.