To make a summary of what you have told me and what I have read ... confirm, please, that these are the steps to follow:
1 - unregister the theme from the wordpress of the current web that already has the new domain (where we change the domain without unregistering the theme).
2 - unregister the license from the license page of my user.
3 - go back to the wordpress and register the license that I have deregistered in point 2.
Comments
If you are having issues with deregistering your license key, want to manage your license key or most important, you want to deregister a website that has been removed without deregistering it first, head to this topic: https://forum.muffingroup.com/betheme/discussion/36219/cannot-register-deregister-your-license-key-use-this-tool#latest
There you will find instructions and a link to our license tool.
thanks