Why am I seeing less activity in the "What's happening" view?

If you are seeing less activity than before in the "What's happening" view, it's often because your role has changed in the projects that you were previously seeing activities for. What you see in the "What's happening" view depends on your roles in each project (team member, product owner, stakeholder). If you no longer have a role in a project, you will no longer see activities for that project in the "What's happening" view.

What you see in the "What's happening" view also depends on whether you are the assigned person of specific backlog items, tasks, etc. So, if this has changed, you will also see less activity.