You can upgrade your license anytime after purchase from the My Account page of wbcomdesigns.com.
Log in with the email ID and password you used while purchasing the product.
You will have options of upgrading to 5-site license, unlimited -site license, or lifetime license option.
The License tab on the My Account page allows you to upgrade the license conveniently. From the “view upgrade” link, head over to the purchase history page and click on the upgrade license button to redirect to the checkout page.