Hello! We recently migrated to a new CMS Host/Server. After the migration, we check the system information in our WP dashboard. We found out that our theme (NewsMag) again needs activation. We downloaded our license file. However, when we entered our purchase code in was invalid. We just purchased it last 2019-11-22 07:24:32 UTC.
If you don’t have access of old website wp-admin where the theme registered/activated then you have to contact theme author and request them to unregister/deactivate the theme license for the old domian/website.
contact theme Author and let them know How to Contact your purchased theme Author, theme author will be happy to assist you.
I still have access to old website. how do I unregister/deactivate theme?
if you need to unregister/deactivate then you can do it from your website wp-admin. In your pruchased theme options should have options for both register and unregister theme license.