It has come to our attention that there was an error in our system that caused PayPal users who Check Out as Guests to be unable to submit payment. It was definitely a mistake on our part. Our system would check for an email address to send confirmation emails. Those that Check Out as Guest do not enter an e-mail address into our system so it would return with an error when it could not locate the information.
The issue has been corrected.
If you are still having trouble submitting payment through our Web Store, please contact us at firstname.lastname@example.org!