title: Why Heroku is always unable to verify my credit and debit cards?
body: <p>I've tried 4-5 debits cards and 2 credit cards of different banks but the error &quot;Unable to verify your card. Please try later or contact your financial institution for help.&quot; always comes up. I'm sure the information I'm filling is correct and international transactions are also activated. How do I find out what is the problem?</p>