Plugin: 4.8 WordPress: 5.4.2 (single) PHP: 7.3.21-1+ubuntu16.04.1+deb.sury.org+1 Browser: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.135 Safari/537.36 JavaScript: https://[client's URL]/wp-content/plugins/redirection/redirection.js REST API...