Note:
1. You received Auth Code in your registered email
2. Keep same registered property name to use auth code
3. You can use same Auth code for all the purchased licenses/Terminals
4. Use same Auth code surrender or reactive license again

Activate License: Follow bellow steps to active license

Screenshot 1: Open software as run as administrator and click on register button
Screenshot 2: Apply Property Authcode 

OR

Surrender License: Follow bellow steps to deactive / withdraw / Remove license