Issue with Hana One in AWS

Hello ,

Please help me with the below issues I am facing when I launch HANA Studio and add system .

- My HANA Instance is up an running in AWS .

- Added system in HANA Studio with User - SYSTEM and Pwd : manager .

- Then unfortunately/ unknowingly I deleted the system from HANA Studio .

Now I am trying to add system again with SYSTEM and manager details , i am getting Invalid User credentials . Please help me with this issue I am very new to HANA One on AWS .

Also Please help me with the importance of PUTTY process as mentioned in How to start with HANA on AWS blog in SDN .which i didnt do .

Looking forward to start with HANA Studio ASAP ....Appreciate quick help !

Many thanks

Shishupal