How to stop displaying names & start displaying anonymous in the notification?

Go to notification list > edit notification > Design tab

If you want to hide the name of users to be displayed in the notification, here is the option for you.

This will help you maintain the privacy of the user if required.

• In the Text editor section
• remove {{F_NAME}} & {{L_NAME}} keyword and set your custom text:
• Notification will look like: Anonymous from {{CITY}}, {{COUNTRY}}