1 System Overview — Getting to Know NS16 E-commerce Platform 5 2 Basic Operations — Lists, Search, Filter 3 3 First Login — Sign In and Change Password 3 4 Cannot Place Order Due to Insufficient Stock 1 5 Language Switching 1 6 Using Your Balance & Points 1 7 Can't Log In / Account Frozen 1 8 Order Status Not Updating After Payment 1