Dear Doctor, Thank you for reaching out to us. The PayPal error message stating, “Sorry, we couldn’t set up your subscription using the card you selected” typically occurs due to restrictions placed by the card issuer on recurring or international transactions. It may also result from insufficient balance, authentication failure, or the use of a virtual/prepaid card. We recommend trying a different card, or contacting your card provider to confirm whether international and recurring payments are permitted on your account. If the issue persists, you may consider using an alternative payment method such as PayLetter. [Alternative Payment Option: PayLetter] Click the “Other options” button located at the bottom right of the payment window to attempt a direct credit card payment. Please let us know if you need further assistance. Sincerely, WEBCEPH Team