If you have an existing site licensed for use with OptimizePress and need to change this, you can do so with a few easy steps;
Go to your website you no longer need and click > OptimizePress > Dashboard and click “Disconnect”
Go to your members hub at https://my.optimizepress.com
Click on “Licensed Sites” from the left sidebar
Find the domain you no longer are using from list
Click the 3 vertical dots icon to the right side and click “Delete”

Once you have cleared the old site - you can install OptimizePress on your new site, click “Connect” and you will then be able to license your new site.