Hello! very nice discussion. actually I have also same problem related to connectivity and run helloworld program on HANA could.
I run hello world program on local server. it works. no issue.
when I am going to run on cloud it ask me information about account name (i entered from account.hanatrial.ondemand.com like e-g p-numbers-trial). and I entered my SCN user name and password. but it give me error. screenshot is attached. I am requesting from all of you please help to fix my issue. Thanks in advance.