You are using a free version of Avactis Shopping Cart. As you might've seen, some powerful features are not available. To make them available, you need to buy a license. Please open the following page and choose the appropriate package: http://www.avactis.com/upgrade.

After buying, you will get an email with your license key. Please enter the key in the input box below and click Submit. All features of the software will be unlocked.

If that doesn't happen for some reason, please open a support ticket.