Koongo as a Servise allows you now to subscribe to a pricing plan called Pay as you go, which is a replacement to the current Basic and Advanced plan. Although the upgrade of your current plan to Pay as you go is not mandatory we strongly encourage you to do it as this way you pay only for the resources you use.
Please note that Pay as you go plan is available only to Prestashop, Magento, CS.cart, Shoptrader and Custom platforms. Pay as you goplan is NOT available to Shopify, SEOshop, CCV Shop and BigCommerce users as for all those platforms Koongo has apps which are charged out of Koongo's billing system.
For more information and futher instructions please refer to Koongo's documentation.