You can view your current your payment method and check your billing history from the Account page. While logged in, go to the Account page and click on the Billing tab. If you don’t see a Billing tab that means you are on the Free plan and have not been billed for this account.
Update your payment method:
You can change your payment method by clicking on the pencil icon to the right of your payment information. You can delete your billing information at any time. If your account lapses while there is no payment method attached, the account it revert to the Free plan.