SAP HANA Cloud Platform Cockpit - getting connected to ES4

Hello !

I am just trying to do my first steps towards FIORI development. What I did so far is:

1. Get the HANA Trial accunt, and install the WEB IDE.
   This works fine, at least for the "Hello World" example.
2. Create an Account on ES4. This also works fine, as long as I try to Access it
   via WebGUI.

My next plan was to retrieve Data from ES4 and to use it in my next FIORI Application.

For this, I tried the following example:

http://scn.sap.com/community/developer-center/front-end/blog/2015/07/27/creating-and-deploying-sap-fiori-app--dc-exercise-part-1-of-3

And this is where I get stuck ... as in the example, I tried to create a new Destination:

Image may be NSFW.
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However, when I try to Access it, I get the follwing message:

Image may be NSFW.
Clik here to view.

I am wondering what to do now ... I think it is a certificate Problem, since I have not installed the JDK. My understanding ist that the JDK Installation makes no sense for me, since I use the WEB IDE for development.

Does anyone know how to cope with this Situation ? Any help is appreciated !

Regards & thank you in advance,

Martin