If your card has been declined, start with these basics before doing anything else:

If the basics all check out, read on to find out what else might be going on.

3D Secure (3DS) is an extra layer of authentication used by many online merchants. When a merchant requires 3DS, you'll usually see a pop-up or redirect asking you to verify the payment.

Premium Visa Cards support 3D Secure, so they should work at merchants that require it.

Non-reloadable cards may or may not support 3DS depending on the third-party supplier. If you're being declined at a merchant that requires 3D Secure and you're using a non-reloadable card, try using a Premium card instead.

Some merchants don't accept prepaid cards at all. This is a restriction set by the merchant, not by Zypto. You'll usually see a generic "card declined" message without much explanation.

Common examples include certain subscription services, car rental companies, hotels (for deposits), and some government or utility payment portals. If your card is declined at a specific merchant but works everywhere else, this is likely the reason.

There isn't a fix for this on Zypto's side. You may need to use a different payment method for that particular merchant.

The card issuer maintains a list of merchant categories that are flagged as high risk. Transactions at these merchants are automatically declined as a security measure. This is controlled by the card issuer's risk policies and is not something Zypto can override.

High-risk categories can include gambling and betting sites, adult entertainment, certain financial services, cryptocurrency exchanges, and some online marketplaces. Sometimes merchants are flagged even when they seem perfectly legitimate (we've seen churches and food delivery apps get caught by this).

If you believe a decline is a false positive, contact our support team with the merchant name and transaction details. We can raise it with the card issuer, but we can't guarantee a change since the issuer makes the final decision on their risk policies.

When you pay online, many merchants check that the billing address you enter at checkout matches the address on file with the card issuer. If these don't match, the transaction may be declined.

For Premium cards, the billing address is the one you provided during KYC. Make sure you enter this same address at checkout.

For non-reloadable cards, check the billing address on the issuer's portal (the site you accessed via the Zypto redemption email). Some issuers let you update the billing address; if so, make sure it matches what you enter at checkout.

If you enter the wrong PIN multiple times at an ATM or in-store terminal, your card may be temporarily locked as a security measure. This is automatic and designed to protect you from unauthorized use.

If this happens, contact our support team and we can unlock your card. Please don't keep trying with different PINs after a lock, as this can extend the block.

Zypto uses security systems to monitor for unusual transaction patterns. If the system detects something that doesn't match your normal spending behaviour, it may temporarily block a transaction or your card as a precaution.

Things that can trigger this include:

If you think your card was blocked because of something like this, contact support with your email address and we'll review and unblock it if everything checks out. To avoid this in the future, try to avoid using VPNs when making card transactions, and if you're travelling, be aware that a sudden change in location may trigger extra checks.

Premium cards are denominated in USD. When you make a purchase in a different currency, a foreign exchange (FX) fee of 1.75% is applied. In some cases, the merchant may also add their own currency conversion surcharge on top of this.

Declines related to currency are rare, but can happen if the total amount after conversion exceeds your available balance. Make sure you account for the FX fee when checking whether you have enough balance for an international purchase.

Occasionally, a transaction may appear to be declined at the merchant but you notice the amount has been deducted from your card balance anyway. This is sometimes called a "ghost charge" or "pending authorization."

In most cases, these pending authorizations are released back to your card within a few business days. If the amount hasn't been returned after 5 business days, contact our support team with the transaction details and we'll investigate.

Non-reloadable cards are provided by third-party suppliers and may behave differently from Premium cards. A few things to keep in mind:

If your non-reloadable card is being declined, try it at a different merchant first to narrow down whether the issue is with the card itself or with a specific merchant. For the full guide on non-reloadable cards, see our Non-Reloadable Virtual Cards article.

Some card issues need our team to investigate. Get in touch if:

When contacting support, it helps if you can share:

Our support team is available 24/7 in most regions and happy to help get your card working.