Problem:

Server IP is being displayed in the dashboard instead of user’s (client) IP in wordpress website  whenever any user logged into website.

Solution:

Install WP Security plugin or if you have already installed it then Go to the following settings page:
WP Security >> Settings >> Advanced Settings

Choose the value “HTTP_X_FORWARDED_FOR” from the drop down box.
Save the settings and check your dashboard again.

That’s it.