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How do I change my payment details?

You can change your payment details anytime. Just access your Account page in Nelio A/B Testing:

Account page of Nelio A/B Testing.

In the Billing History box you have a link to Manage Payments. This link will get you to your account page in FastSpring, the payment system we use to manage your subscriptions.

Select your default payment method in Fastspring's account management panel.

Once there, select the Account Details and Payment Methods tab. Within this tab you can add additional payment methods and manage the current one.