Unable to login from designer

Hi ,

I have installed server and client components on different machines. My
repository database also on server machine. I successfully created the
repository. From client system I can login the central management
console also . But when I am trying to login the designer I am getting
the below error login failed to specific systems.

I am using SAP Data Services 4.2.2

Please find the below  screenshots and help me to resolve this issue.

Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.

Thanks & Regards,
Venkata Ramana PaidiImage may be NSFW.
Clik here to view.