To install the plugin follow these steps :
- Download the ip-dependent-cookies.zip file to your local machine.
- Unzip the file
- Upload "ip-dependent-cookies" folder to the "/wp-content/plugins/" directory
- Activate the plugin through the 'Plugins' menu in WordPress
- Go to plugin settings and enable the plugin.
- You will be prompted to log in again. Do so. This is necessary to set the new cookie.