got stuck when running preview on SAP Web IDE for first Fiori App

Hi

I am not able to get the application preview function working in SAP Web IDE.

I have logged on to my HCP trial account (no problems) and from here I have clicked the URL for the SAP Web IDE listed under "subscriptions". The SAP Web IDE opens fine, and I go to my first Fiori App, and try to run the index.html with mockdata using the menu. I then get a screen stating "loading", and then the logon screen for SAP HANA Cloud pops up (again?!). In the background I can see the menu for the preview ("large", "medium", "small". etc.), but I am not able to logon to the SAP HANA Cloud, even when I use the user and password that allowed me to logon to HCP in the first place?! please advice what to do.

BR Erling Steenholdt