Hi @Egzonnn
Could you confirm where you are seeing this message? Is it at the checkout while trying to purchase a product from a Shopify merchant, or in your admin while trying to pay for an invoice?
If you are a merchant trying to pay for an invoice, you will want to ensure that your card meets the requirements we have laid out in our Help Center here: Billing FAQ · Shopify Help Center.
You can also reach out to our live support team who will have more insight into why the card may have been rejected.
If you are trying to purchase a product and are seeing this error message, I would reach out to the store you are trying to purchase from to see if they can assist you further.