I assume you mean main newsfeed by "all newsfeed" ? If yes, this is not possible with current Newsfeed  settings. Newsfeed on users dashboard shows only user related information.

Now newsfeed  does not allow comments,no image uploads,no links,no videos. What happened?

Kumi, most likely the plugin was installed/updated incorrectly.

This also could have been caused by custom javascript code used on your site.