Dear Bruce,
There is an option to activate the plugin on a new domain/sub-domain/directory/sub-directory, you need to deactivate the purchase code/license from the existing domain/sub-domain/directory/sub-directory where it installed now.
Just go to the Bizwalls Licensing
tab from your WordPress dashboard where it installed now to deactivate the purchase code/license.
Best Regards,
ThemeLooks Support Team