If you've received LayerSlider as a bundled plugin in your theme, you cannot use your theme's purchase code to activate it as they are two separate products, item support and updates will be provided by the theme author in this case.
Alternatively, you can purchase a license from us, so we can provide our support services for you, along with our auto-update solution, beta and early access releases and exclusive offers for our direct buyers as well.
It does Not Work
I deleted the old theme I was doing and installed a new theme, then can not be active.
Dear Donghieu131,
If you've received LayerSlider as a bundled plugin in your theme, you cannot use your theme's purchase code to activate it as they are two separate products, item support and updates will be provided by the theme author in this case.
Alternatively, you can purchase a license from us, so we can provide our support services for you, along with our auto-update solution, beta and early access releases and exclusive offers for our direct buyers as well.