Hover over a topic in the left sidebar.

Click on the ellipsis ().

Select Mute topic.

Press and hold a topic until the long-press menu appears.

Tap Mute topic.

Click on the gear () icon in the upper right corner of the web or desktop app.

Select Personal settings.

On the left, click Muted topics.

In the Actions column, click Unmute next to each topic you want to unmute.

Tap the Streams () tab at the bottom of the app.

Select a stream containing topics you want to unmute.

Tap the Topics list () icon in the upper right corner of the app.

Press and hold a topic until the long-press menu appears.

Tap Unmute topic.