If you would like to cancel your Membership auto-renewal, please log in to your paid account first. Hover over the "Hi, [Name]" in the upper right corner, and click 'My Info.' Click on 'Membership,' and you will be able to 'Edit Auto-Renewal Subscription.'
Alternatively, you can log in and click this link to access the correct section in your account: http://www.jibjab.com/my_account/membership
If you do not see the link to 'Edit Auto-Renewal Subscription' then you have already successfully shut off your auto-renewal. If you are a 'free' member, you won't see any auto-renewal option. If your most recent subscription payment was declined, your auto-renewal is automatically disabled.