1) First, check your compatibility. You can use the add-in with Microsoft PowerPoint and Word. Microsoft Office 365 for PC, Mac, or Web is required.
- PowerPoint 2013 Service Pack 1 or later
- PowerPoint 2016 for Mac
- PowerPoint 2016 or later
- PowerPoint Online
- Word 2013 Service Pack 1 or later
- Word 2016 for Mac
- Word 2016 or later
- Word Online
2) Upgrade Microsoft Office.
3) Try opening PowerPoint/Word first then click the add-in link to install. This may resolve the problem.
4) Try re-installing the add-in by selecting ‘Store’ (within the program) to find our add-in, instead of installing from the link we provided.