The Who Viewed Me plugin includes settings that allow Site Administrators to customize the display of Age and Gender. Follow the steps below to understand more about settings.
(Back-end) Access to Admin Dashboard => Plugin Manager => Who viewed me => Settings.
Tick on Yes option => Click the Save Settings button.
Go to Who Viewed Me page.
You will see the age and gender of members on the Viewed Me and I Viewed tabs.
Viewed Me tab
I Viewed tab