Hi there Ankur,
I'd recommend contacting support on this one for sure -- they'll wanna know about the issue in case it helps others!
At the moment, I do not know the answer but can you describe what behavior it is you're looking for in some more detail, just so I can be sure I understand the issue?
As per the Tableau Help page (the first one you've referenced),
only Creators are able to create new data sources.
Thank you for reply.
Please check on below link:
As per this link, after Web Authoring set up, Tableau server should show various Data Source connection options.
But I am still seeing only Published Data Sources as usual, other options for 'Files'/'Connectors' are not available.
I am logged in with Admin account with full privileges.