Please note that our two premium plugins, Cost Calculator and Bold Timeline, come bundled with the theme and therefor don't have separate purchase codes.
Although newer versions of the two plugins have product license panel for entering purchase code, this will only work when they are purchased separately, not when they come bundled with the theme.
Note that you are not required to purchase them separately if you are using one of our themes, and you shouldn't enter theme's purchase code.
The only purpose of the product license is to allow people to update plugins through wp-admin panel, but since you got them together with the theme you will get the necessary updates with new theme versions.
You can find more information on bundled plugins on the following link.