There could be several different reasons you're seeing a decline error message or your donation won't go through.
If your debit or credit card was declined, check to see if:
Your card is expired or out of date—if the card you have on file doesn’t have your current billing address or is expired it will be declined.
You need to confirm your card—your card may need to go through a confirmation process.
Your card company or bank has more information—if the above steps don’t solve the issue, you can call your credit card company to identify the problem. To protect your privacy, your debit or credit card company or card issuer doesn't tell GivePulse or payment processors (Stripe or Network For Good) why your card was declined. If you can still use your card, please try your transaction again.
If the above process still doesn't work, please feel free to contact firstname.lastname@example.org and we'll help you accordingly.