Hi shelta,
Thanks for letting us know about this. The error you are receiving indicates that your token generation attempt was unsuccessful because your eBay account is already linked to an existing Auctiva account. If you contact our customer support team and let them know your eBay username, they should be able to locate that existing account and provide you with a solution to this situation.
You can contact our customer support team at any time by completing the web form on the following page of our site:
http://www.auctiva.com/help/requesthelp.aspx-Mike