Comment to Link Domain/timeline-view
You're referring to the plain timeline-view URL without any URI identification. I'm still waiting for your messages with UNA studio access (with the CPanel will be fine too).
I think, that I now know the reason. I tested with the admin account without any created profiles. Is this possible. But then a message like in the other modules would be meaningful: "YOU HAVEN'T CREATED ANY PROFILES, SO YOU CAN'T 'CREATE POST'."