Before You Begin
Make sure that you have the latest App uploaded to your App Catalog
Open the SharePoint Site where you have ShortPoint Add-In installed
Open Site Contents
Locate the ShortPoint App, and then proceed with the update
In the Modern Site Experience:
Click the ellipsis (…) and then Details.
If you still can't see this message, then Click the ellipsis (…) and open the App ABOUT page
After that, click GET IT!
Trust It and then wait for a moment until the app get updated on your site
In Modern Experience, this is what you will see
Wait and Refresh
The page should refresh and the message will disappear and ShortPoint App will become available (not disabled)