The only thing that comes to mind is that your SAID (Support Agreement ID) may not be linked to Data Protector when you log into the SSO site. This is a public forum, so, you would not necessarily need to have a linked SAID to get into this Forum. We are only allowing folks with valid SAIDs to download things like patches
If you have a SAID for Data Protector support, add it to your Profile
You may download a copy of DP 8.1 from the site
http:/www.hp.com/go/dataprotector
and clicking on the down-arrow next to Trials and Demos. This is a full version of DP 8.1 except for Licensing