Help Orders How do I change my membership? If you'd like to change or cancel your membership, please log in to your MeUndies account and select the "Membership" tab. From this tab, you can update your membership order at any time. Related articles What if I need to change or cancel my order? How do I cancel my membership? How does the membership program work? How do I contact the MeUndies fam? How do I enter a promo code?