There are many customization options such as whether to charge upfront or when product is preorders released. Sumo memberships – prerelease woocommerce membership system how to upgrade to a newer version of sumo woocommerce pre orders? if you are using an older version pre-order & want to upgrade to the latest version of sumo woocommerce pre orders then please do the following steps. Sumo woocommerce pre orders is a comprehensive woocommerce pre pre-orders orders plugin using which you can allow your customers to pre order the products before they are released. The documentation file can be found i