Thank you very much for letting us know the issue.
If possible, can you please share your CRM admin user credentials and FTP to our email address prafullsatasiya@gmail.com?
Please feel free to ask me, if you have any query.
This plugin is working based on login and logout event in your system. After installation of Log Track plugin you or any of your users have not logout or login in your system so you are not able to see any activity in Log Track module.
Once any user will login or logout in your CRM,you will be able to see Login time, Logout time, Username and IP address from where user logged in to your system.
Please feel free to say me hello if you need any kind of help from our side.