WpBakery Purchase Code

Hi @ilkinozturkk,

When you purchased this theme from the Kutethemes team, you do not need to add any license key
The license key is just let you know there is the automatic update of that plugin and you can update it automatically and it's applied for only one domain.
We purchased this plugin, we got its license key and we applied for the demo site already. So, if there is any update, we will update for the demo site and you can update later

Hope you understand.
Regards,
Yame