Log in to your account on the Designer server then click on the "Accounts" link in the left menu bar. The Designer server will display the API data that you need to copy and paste into the Prestashop system:

In the Prestashop admin page, navigate to configuration page for the Print Science Designer module. Configure the following parameters:
- API Username
- API Key
- API Version. Use: 4.0.0
- URL for the Designer server. The URL should terminate in "/".
- API Image URL. Leave blank
- Window type. Select "Modal pop-up" to open Designer inside modal pop-up durectly in the Prestashop site.
- Background color of modal pop-up.
- Margin around modal pop-up. Size of margin between full size of window and modal pop-up.
The Key and the URL are available from your control panel on the
Designer server. Please login to retrieve these.