Donor's payment/donation/gift was denied due to a Front-End Error
Front-end errors indicate that the donor's financial institution (Bank and/or card issuer) has declined the transaction, usually but not always, due to an issue with the payment method.
A Gateway Error means the transaction failed after looking valid to our front end site. This could happen due to Insufficient funds, Fraud, account canceled, a bank error, or similar types of issues.
The only way to fix this is for the donor to speak with their financial institution.