In my personal opinion attribution or credit should be given to those who helped you in other way then selling you a pack , if I buy a pack from the marketplace you didin’t help me only , I helped you also so that’s a fair trade, but when a seller gives you extra support and help now that’s where the credit comes up. And @mariomguy ofc you credit Epic becouse they gave you a free engine to work with along with documentation for it don’t compare it to something that you sell in the marketplace.