Sync from iPad to web version

Hi I am a real novice I have saved about 12 more books and articles to my iPad along with file attachments. I have already other books and articles saved in endnote online version but I cannot get the iPad to sync or upload the updated version to the web version. Is this possible or does it only work the other way around. Each time I try it comes up with the message cannot sync user name and pathway not specified. Anyone help!

Please contact Technical Support directly

1-800-336-4474 option 4 then 1