If your card is declined, the decline comes directly from your bank. You may use another credit card or you may change the refund option to the File & Go / Bank RT (Refund Transfer) Direct Deposit Option. With this choice, the fees are directly deducted from your Federal refund.
I received an error code when paying
If you are receiving an error code you may need to call customer support. Please check the current support times and phone number by clicking the Help & Support icon on the top right of your account. Have the error code you received available when you contact support.