> ## Documentation Index
> Fetch the complete documentation index at: https://docs.waffo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Payment Method

> How your card on file works, and what to do when it changes

The Customer Portal shows the card used for a subscription — brand and last four digits — so you can confirm which card will be charged.

<Warning>
  The portal is **read-only** for payment methods. There is no way to add, replace, or remove a card yourself. To change the card on a subscription, contact the business you subscribed to.
</Warning>

***

## Card Expiring or Replaced?

Because you cannot update the card yourself, act through the business:

<Steps>
  <Step title="Contact the business">
    Use the support address on your receipt or in emails from them. Tell them the card on file needs replacing.
  </Step>

  <Step title="They arrange the change">
    Depending on their setup they will either send you a new checkout link or take the details another way.
  </Step>

  <Step title="Check the portal">
    Once done, the portal shows the new brand and last four digits.
  </Step>
</Steps>

<Note>
  Do this **before** the next billing date. An expired card means the renewal fails.
</Note>

***

## Failed Payment

If a renewal fails, the subscription goes **past due** and the system retries automatically.

| Reason                   | What to do                                              |
| ------------------------ | ------------------------------------------------------- |
| Insufficient funds       | Add funds, then wait for the retry                      |
| Card declined            | Contact your bank                                       |
| Expired or replaced card | Contact the business — the card on file must be changed |

<Warning>
  If retries keep failing, the subscription can be canceled and access revoked. See [Subscriptions](/customers/subscriptions).
</Warning>

***

## Supported Methods

| Method       | Notes            |
| ------------ | ---------------- |
| Credit cards | Visa, Mastercard |
| Debit cards  | Same as credit   |

Available methods depend on your location and the store's configuration — the checkout page shows what applies to your order.

***

## Security

|                            |                                                |
| -------------------------- | ---------------------------------------------- |
| **In transit and at rest** | Encrypted                                      |
| **Standard**               | PCI compliant                                  |
| **Storage**                | Tokenized — full card numbers are never stored |
| **Businesses**             | Never receive your full card details           |

***

## FAQ

<AccordionGroup>
  <Accordion title="Can I change my card in the portal?">
    No. The portal displays the card on file but cannot change it. Contact the business.
  </Accordion>

  <Accordion title="Same card, new expiration date?">
    Still needs to go through the business — there is no self-service field for it.
  </Accordion>

  <Accordion title="Can I store more than one card?">
    No. Each subscription bills the card captured at checkout.
  </Accordion>

  <Accordion title="Will changing my card trigger a charge?">
    No. A card change does not charge you; billing happens on the normal renewal date.
  </Accordion>

  <Accordion title="No portal link?">
    Sign in at the [Customer Portal](/customers/overview) with the email you used at checkout.
  </Accordion>
</AccordionGroup>

***

## Need Help?

<CardGroup cols={2}>
  <Card title="Card or billing changes" icon="store">
    Contact the business you subscribed to — they control the payment method.
  </Card>

  <Card title="Technical problems" icon="envelope" href="mailto:support@waffo.ai">
    Contact us if the portal itself is not working.
  </Card>
</CardGroup>