Common reasons banks have for declining a donation instruction include insufficient account funds, exceeding the daily limit on a payment card, entering incorrect account details, expiry of a card, etc.
Contact your bank to ask why your payment instruction was declined, rectify the situation if necessary, then return to the donation page of the cause or activist you support and attempt the donation again.
Should the donation continued to be declined after having contacted your bank, please contact GivenGain and provide the details of the donation for further inspection.
Note: Only VISA / Mastercard credit cards are currently accepted as donation payment method from a card. Diners Club or American Express cards are not accepted.