I recommend installing the free demo version right before buying and check the need for session management. The OC Session Manager module is mostly meant for OpenCart 3. Opencart stores some person information (language, currency, cart, and so forth.) in PHP sessions. OpenCart can store this data in two strategies: https://messiahtmdnv.oblogation.com/31234697/how-much-you-need-to-expect-you-ll-pay-for-a-good-opencart-platform