You are getting an access denied error. That means the userid, password, or key are incorrect.
I added the error and full request sent to UPS to the failure page for reference.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.