To activate ShortPoint Add-In license, you need to open ShortPoint Licensing page and activate your license.
Go to Site Contents, locate ShortPoint Add-In, click on it to open ShortPoint Dashboard then open Licensing.
Important: Make sure to activate the license at the root site of your site collection, if you are using ShortPoint on the entire site collection.
If you purchased your license or requested to extend your trial, you will see a message. "New license is available".
Click on Activate
You will see the status and how many days left before your next renewal.
You need to assign ShortPoint Users to accounts from your environment.
By default, ShortPoint will assign the user who installed ShortPoint Add-In as ShortPoint user. You can change the user of course and assign it to someone else. But it will be locked and can not be changed.