Your store is configured to serve digital products using "Redirect only" method. This method is deprecated, <a href="%s">please switch to a different method instead.</a><br><em>If you use a remote server for downloadable files (such as Google Drive, Dropbox, Amazon S3), you may optionally wish to "allow using redirects as a last resort". Enabling that and/or selecting any of the other options will make this notice go away.</em>