After using WP Simple Pay Pro for a while, you may find that you need to upgrade your license to install on more sites or to add Stripe subscription capabilities.
We’ve made it easy to upgrade by paying just the difference in price and keeping your existing license key.
First, log in to your WP Simple Pay account. Under your license information click Upgrade Now.
On the next page, you’ll be presented with upgrade options along with the price. Your upgrade cost should be prorated for your previous license purchase.
After clicking Upgrade License on the plan you want, you’ll be taken to checkout to complete the purchase.
At this point, you should be able to activate WP Simple Pay Pro on additional WordPress sites and access additional features in the settings without changing your license key. If you have any issues with the license upgrade process please submit a support request.