Before You Begin


Make sure that you have Removed the Add-In from Site Collection Recycle Bin


Step 1: Login to your Office 365 admin center page with administrator account, then choose Admin


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Step 2: 

Go to SharePoint Admin Center


 Or in the new admin center



Step 3: Select Apps then Click on App Catalog



Step 4: Open Apps for SharePoint





Step 5: 

Find ShortPoint item and right-click to open the context menu and click Delete.