If your membership is paid through Google Play, you will need to turn off your auto-renewal through Google Play directly. Here's how:
- On your Android phone or tablet, open the Google Play Store .
- Check if you’re signed in to the correct Google Account.
- Tap Menu Subscriptions.
- Select JibJab from the list.
- Tap Cancel subscription.
You can also view these instructions on Google's Help site: https://support.google.com/googleplay/answer/7018481