Deactivate a Website from a License Key
If you find that you want to use your theme on another website and have no more options to add a site, you can deactivate one.
To deactivate a website, go to Members > Account Details
Or, go to Members > Purchase History
Under the License Keys section, click on the Manage Sites link:
Click on the Deactivate Site link. You can also deactivate an existing website if you decide to move your license key to a new website URL.
To manually add a new website when logged in, enter the URL and click the Add Site button.