I like to recommend installing the free demo version before acquiring and check the need for session management. The OC Session Manager module is primarily intended for OpenCart 3. Opencart stores some user info (language, currency, cart, etc.) in PHP sessions. OpenCart can store this information in two techniques: Within https://lorenzoeiwhu.thekatyblog.com/30852620/create-your-own-ecommerce-with-opencart-an-overview