You can edit the payment method at any time. The changes are adopted real time that is why you can immediately delete the details of your old card. You can expect the changes in the next billing cycle.

For  ZonTools v1.0 users

1. Go to www.zon.tools.
2. On the top right corner, click Log In, and sign in with your Amazon credentials.
3. Click Account Settings.
4. Click Payment Methods.

1. Note:
   You can assign a default payment method so that the system charges it for all of your active subscriptions.

1. Tick off the checkbox Update the Payment Method used for all of my active subscriptions.
2. Click Add Payment Method, and enter the details of the new card.
3. Delete your old card details.

For ZonTools v2.0 users:

Log in and follow the breadcrumbs to reach the Payment Method dashboard:

My Account  >  Account Settings  >  Payment Method

1. Click Add New.
2. The Add New Payment Method modal opens.
3. Enter your Billing Address Information.
4. First Name
5. Last Name
6. Address line1
7. Address line2
8. Postal Code
9. City
10. State
11. Phone Number
12. Email checkbox: Same as account email
13. Email to CC
14. Enter your Card Information.
15. Card Number
16. Expiration Date
17. CVC
18. Check the tick box to agree with the terms and conditions.
19. Review the Terms of Service page.
20. Click Save.

Related Help Center articles:

• How do I compute my monthly billing?
• Adding multiple Marketplaces
• Adding a sub-user to your Amazon account via ZonTools