Copy the below code to remove footer credit-
<style>.removelink{text-indent:-99999px;}</style>
<div class=’removelink’>
Copy the below code to add a dofollow backlink in footer credit-
Copyright © 2021 All Right Reserved <a href=’http://www.YOURDOMAIN.com/’ rel=’dofollow’ style=’color:#ffffff;’ >YOUR WEBSITE NAMe</a>