I have been trying to set up my membership payment to go automatically and i get the error message as shown below. I do not have a paypal account I had one years ago but never with the email address and card details I entered today.

You cannot use an email address or card number that belongs to an existing PayPal account. If you have a PayPal account, please log in. If you don't, please change the email address or card number and try again.