A family of Microsoft word processing software products for creating web, email, and print documents.
Adobe has recently moved the location of the .ppam file. Follow the same steps to open you user Library folder, but then try looking in ~/Library/Application Support/Microsoft/Office365/User Content/Startup/PowerPoint
If that doesn't work, please post your question in the Acrobat User Community, as the problem is caused by the Acrobat installer, not Office.