Reset my premium Wordfence key for another domain
This often happens when you change the domain name of your website. For example if you have a staging or development server and you migrate your website to live with a different domain, you’ll see this error.
On the old site
Downgrade or ensure you are on a free key (If you no longer have access to the old site, you can skip this step)
Login to Wordfence.com
Select the button to "manage API keys"
Click the checkbox next to the key you want to use on the new site and then click "Reset selected keys"
On the new site
Add premium key and save options