if you refer on your test staging site, i found out you have disabled quite a lot of user app from your backend, you can check my attached screenshot below which causing those stream not appear on the dashboard, I've help you published those user app from your backend, it should render those stream on dashboard now.
Thanks for the feedback but when I updating status and click to "Share" it showing us "There are no activities here yet", as I published the "Share" option.
I have a little bit lost here, may i know which share button you referring? Is it possible show us some of the screenshot and how to replicate this issue?