Donation Confirmation Page message

Hello,

I am using JoomDonation with FirstData. Today I tested a donation and found that after I went to the FirstData's linkpoint central connect and entered my payment details in and clicked on submit, the confirmation page I was taken to had the following message:

"You must provide at least one recipient email address."

I figured that an error must have been made and the payment didn't go through, but it had as I received an email receipt.
I would like to fix this so that donors are taken to the thank you message that I have set in my JoomDonation configuration messages.

Please advise.

Thank you,
Em