"The merchant's account is not able to process transactions" error displayed when submitting the form

I am facing two issues:

1- When a customer checks out using a credit card payment, the following message come up: Invalid Configuration - This transaction cannot be processed. The merchant's account is not able to process transactions.

2- When a customer checks out using paypal, I receive the payment but the customer doesn't receive an email with the product. (It is a digital product that I sell).

Thanks

This transaction cannot be processed. The merchant's account is not able to process transactions.

Generally, this error is displayed when the connected PayPal account is not a business account or not enabled with direct payments. We request you to check with PayPal support in this regard. 

When a customer checks out using paypal, I receive the payment but the customer doesn't receive an email with the product. (It is a digital product that I sell).

I see that the PDF file is already attached to the email autoresponder and should be sent to the email entered in the form. Could you try sending a test submission to the form and see if you are receiving the email with the attachment?

Please get back to us if you need any further assistance. We will be happy to help.