Yes, I can open the DPS portal via the Folio Builder panel within InDesign. Although I have created Folios locally within InDesign CS6, the DPS portal is empty and everthing greyed out with just the text "There are no folios to display. Create folios with the folio builder in InDesign".
If I try to sign in within the Folio Builder panel in InDesign, I get the error message [IMS_ERROR_FAILURE] . In addition I am also not able to access the "Help" menu from within InDesign although I am connected to the internet.
To complicate it even further, I am working in the UK whereas all internet control (firewall) and licences are handeled by head office in Germany. I am not sure if this is a firwewall issue or not but if the IT department in Germany could get support from Adobe to understand the access requirements, this may help.
Hopefully using the forum someone out there will know the answer.