We have not experienced any instances of problems with the sales process regarding the functioning of either the Noteworthy Sheet Music website or the PayPal website. However, a very few customers have experienced being redirected back to the PayPal site when they clicked the download button. This problem appears to stem from certain settings on the customer's computer that may block the redirect URL, such as an unusually high security setting. If for any reason you are unable to download a pdf after paying for it, simply notify us of the details of your transaction using the Contact Us form and we will promptly email you a copy of the pdf you purchased.