I have registered for an SAP Business ByDesign trial account for which I have also received a Welcome mail. When I go through the 'Click here for your Demo' button in the mail it redirects to https://myXX_XX.sapbydesign.com/sap/public/testdrive/runtime/run?key=XX that contains a few guided tours showing how things work in the ByDesign Launchpad.

Though I am unable to open Launchpad separately. Only guided tour URLs are working that restricts clicking over the tour points only.

Now, when I try to open https://myXX_XX.sapbydesign.com it redirects to https://myXX_XX.sapbydesign.com/sap/public/ap/ui/repository/SAP_UI/HTMLOBERON5/client.html?app.component=/SAP_UI_CT/Main/root.uiccwoc&rootWindow=X&redirectUrl=/sap/public/byd/runtime that asks for User Id and Password but trying my universal id P___/ my email/ nickname nothing is working on that page and the page shows up "Logon data is not correct". Can anyone suggest how to access the trial launchpad of ByDesign?
Any help would be appreciated