Retrieve an Office Add-in
If one of your Office Add-ins isn’t showing up in your list, it might have been hidden. Or, if it was a trial add-in, the trial might have expired. Use the My Apps for Office and SharePoint page to check the status of your apps and retrieve hidden apps.
In Word, Excel, or PowerPoint click Insert > My Add-ins.
In Project, click Project > My Add-ins.
Click Manage My Add-ins.
The My Apps for Office and SharePoint webpage will open.
Find the app and then under Action, click Retrieve.
Go back to Word, Excel, or PowerPoint, and click Insert > My Add-ins to see your list of Office Add-ins. In Project, click Project > My Add-ins.
Note If the app you retrieved isn’t showing up, click Refresh to update the list.