When using the Cayan extension for your Magento store, you should tell your cardholders the following information:
Stored payment methods
When you enable vaulting, cardholders can add or delete their payment information. If a cardholder wants to edit their payment information, they need to delete the stored payment information and then add a new payment method during a transaction. Cardholders can delete their payment information using the Stored Payment Methods page.
Balance inquiry for gift cards
Using the shopping cart, cardholders can check the available amount of credit on their gift card using Check Available Amount.
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Tags: gift card, magento 2, balance inquiry, magento store, advise customer, stored payment, vault