In order to change your license’s domain (to activate your plugin on another domain), you need to login to your Webnus dashboard and go to the Licenses tab as shown below in the image.
Then you should click on Manage Sites button under the title of your related license (i.e. 1 License for MEC Plugin).
Now hit the Deactivate link under the current website address.
After that, you should go the Modern Events Calendar dashboard on your new website to enter the license and activate it.
Please Note: It takes a few hours for the URL to change. Please be patient while this happens. If it did not change after several hours, you can contact the sales department through online chat.