What license to buy (Regular vs. Extended)

Hello,
my friend wants to use this plugin Fancy Product Designer | WooCommerce WordPress by radykal | CodeCanyon for this wordpress website. He’s trying to understand, whether he needs Regular or Extended license and asked me for help.
I have tried reading about the licenses, but I have trouble understanding whether he needs the Regular or Extended.

How is it with this product design plugin above? He will use the plugin on his shop to allow the customers to design a t-shirt and then sell that t-shirt.

Thanks.

Regular license will be fine.