You can update your card details through CHI interface:

  1. Login to your account at

  2. Go to the account section, this will be in the bottom left of the new screen

  3. Inside the admin section you need to go to the Payments & Billing tab

  4. Inside the Payments & Billing tab you have the option to Add Credit Card (or Debit Cards) or to Add Direct Debit.  

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