If you're looking for assistance with Untappd for Business billing, click here.
1. Open the Next Glass Billing Portal and Log In
2. Click on Subscriptions
3. Click View on the subscription you'd like to update a payment method for
4. Click the Pencil Icon next to Payment Method
5. Choose to update the payment method of all subscriptions or just the selected subscription
6. Click on Continue
7. Select your new payment method
8. Click on Update