Actually it's not technically possible to confirm that a download has been completed, we can only track that it was attempted. For example, even if every last bit of data leaves our server as it should we're not on the other end of the connection to verify that it all gets there, downloads don't trigger a response that confirms them.
Generally you can assume everything went fine on any order that shows one or two attempted downloads because the buyer would have contacted you or kept trying until their link expired if there was a problem on their end.
As for affiliate payments, please understand that we have no control over your sales funds. It is the responsibility of every merchant to pay their affiliates personally, we cannot divert money from your PayPal account anywhere else.
Our system was designed to help you calculate affiliate earnings on a monthly basis so that you can pay them out via PayPal or any other means you wish, but you can also choose the schedule on which you pay them if you don't wish to do it month by month.
