I recommend installing the free demo version right before purchasing and check the necessity for session management. The OC Session Manager module is principally meant for OpenCart three. Opencart stores some user details (language, currency, cart, and so on.) in PHP classes. OpenCart can store this information in two strategies: https://atozbookmarkc.com/story18842494/how-much-you-need-to-expect-you-ll-pay-for-a-good-opencart-platform