ShortPoint Add-In for SharePoint Online and Office 365 will not work without turning on scripting capabilities.
It takes about 24 hours for this change to take effect
Login to your Office 365 admin center page with administrator account, then choose Admin
Go to SharePoint Admin Center
Or in the new admin center
Allow users to run custom script on personal sites and self-service created sites
It takes about 24 hours for the change to take effect
Detailed Steps from Microsoft: Turn scripting capabilities on or off