Why Live Composer is asking for an activation code?
All the theme plugins are free or provided under an extended license and are fully working without any activation code
The Live Composer is an open source and free plugin. In other words, the plugin works without any restriction and doesn't require any purchase. The license field you are seeing is actually from the "Extensions" tab. The Live Composer has two premium extensions which can be purchased separately if need extensive integration with some third-party plugins as Woocommerce, Advanced Custom FIelds, etc.
Because we love our customers, we are providing for free three of the twelve premium add-ons are available on the Live Composer Official Extensions Pack: Mega Menu, Google Map, and CPT Support.
Your coupon code for Live Composer premium extensions
SEOWP Theme users are eligible for 20% OFF reduction on any premium extensions for Live Composer.
Your coupon code: SEOWP-20-OFF