1. Go to the website www.my.eset.com
2.Click number  to login. But if you don't have an account, click number  to create a new account.
3.(Create Account) Enter details for creating a new account.  and click to create a new account. 
4.Once you have logged in, select ESET License Manager. 
5.Click Add license. 
6. Click View my license. 
7. Currently, you have to verify your email address (you used to registered) by click a link which sent to your email.
*** If you want to additional support you can contact by this number 02-683-5100 Ext. 1 to contact Support Department