If you have purchased Tier 2 on AppSumo, you have 2 additional PersonalPRO licenses to give someone as a gift.
All you have to do is go to the "Plans and Pricing" section which can be found at the top left of the Dashboard.
Under PersonalPRO you will see the number of available gifts you have left.
When you click on it, there will be a side menu with an option to add the email of the person you want to gift with the PRO license to.
You will be able to see the status of gifted registration and if they've accepted your invite.