Clearing Cache and cookies in the browser settings would solve this issue. However, if you wish to clear the cookies for the Freshchat webpage alone, please follow the steps below.

Clearing Cache in inspect element:

This is done if the agent has trouble logging in. They can go to web.freshchat.com and right click and select inspect element-->Application Tab-->Clear storage.

This method clears the cache and cookies just for the freshchat website so that the user need not worry about losing saved data or passwords for other websites.