I'm here to help you with your concerns. I'd like to know why you're not able to take credit card payments. Did you receive any errors? Or if you don't want to take Credit card Payment? Any additional information would be much appreciated.
If you're receiving an error, you may comment it below so that we can further assist you. However, if you don't want to receive Credit Card Payments, you can void the transaction. Here's how:
Go to the Sales menu and click the Invoices tab.
Locate and click on the invoice you want to void the payment for.
On the invoice page, select the payment made link.
Click the date link.
Select the Transaction processed link and click Refund.
Select Yes, refund my customer.
Select OK on the Transaction successfully refunded screen.
Please take note that you need to do this before the cut-off time, 3:00 P.M.Pacific Standard Time (PST). If it's beyond the processing time, I'd recommend getting in touch with our Merchant Services Team. They can pull up your account in a secure environment and process this for you.