Hello, @Rohit_,
As mentioned in our docs, we do not provide activation keys for plugins – https://xstore.helpscoutdocs.com/article/38-activation-and-purchase-codes . Bundled plugins do not come with personal licenses, read here https://help.market.envato.com/hc/en-us/articles/213762463-Bundled-Plugins
So if you want to use the Premium Features of the plugin, then you have to purchase the plugin separately, This is Envato policy and you may wish to confirm from them as well.
Regards 8Themes Team.