The licence key to extend your subscription by 1 year.
When you purchase the licence key via PayPal, then the licence key will be delivered in a few minutes to your mail box. As delivery mail box is used the same mailbox which is assigned to your PayPal account.
Start the DS DoSurvey! application. Press the top-right menu button with shopping cart. Later on click the button 'Enter licence key'. Copy the licence key to textbox and press 'Submit' button. When the licence key will be recognized as valid, your subscription will be extended automatically.
If you are not satisfied with PayPal contact us via e-mail with your request. The standard commercial invoice will be issued for you. Once the invoice is paid, the licence key(s) will be delivered to your mailbox.