Thanks for the report.
To use the remote printing functionality, first you need to make sure 'PrintInSession' permission is enabled for the role you are using. Please follow the steps to check that
Login to the Account as an Administrator -> Security -> Select a user Role to edit -> Check 'PrintInSession' permission -> Save Role.
Please read this article to 'Enable' for more info.
Hope this helps !!
Customer support service by UserEcho