SSH access errors when using the Gitlab EE documentation for Azure ACS kubernetes

I am getting SSH access errors when using the Gitlab EE documentation for Azure ACS kubernetes. Basically i tried using Azure ACS with kubernetes and also aks preview. But not working for me.

I am referring to the links

https://docs.gitlab.com/ee/install/kubernetes/gitlab_omnibus.html

https://about.gitlab.com/handbook/sales/demo/acs-setup/

Please help.