For setup and how to use plugin instructions visit: https://www.trafficmanager.com/woocommerce-plugin/
This plugin sets a cookie named "tm_clickid" if the user comes from a valid TrafficManager tracking link. If your site is subject to the GDPR legislation, you may want to add this cookie to your cookies list in your cookie policy.
This cookie is set as a first-party cookie, with a time to live decided by you in the plugin settings page (default is three days). This cookie is necessary to attribute the sale to the right source.