how to deregister betheme on a site that no longer exists?

i can’t use my purchase code, as it tells me to deregister the theme at (website address), but that address doens’t exist any longer. how do i reset the license? thanks!!!

Hi

Please Contact your purchased theme Author and let them know. Theme Author will assist you to deregister and register the license through their support systems.

Thanks

You can deregister BeTheme License using this link below:

http://api.muffingroup.com/licenses/

For More, Following instruction as below: