Feeds not showing all the updates

Feeds not showing all the updates

Hi,

Surprisingly my feeds page doesn't display all the updates, even after I updated the feeds preferences to see all the users' activities. It shows very old updates only, from 2 or 3 weeks ago, while there have been many updates since.
Apparently other users from my organisation are experiencing the same issue.
Could you advise on how to solve the problem?

Thanks