I missed this part about him downloading the software from the App Store. Does he say that he searched for the wallet on the App Store manually or that the official Ledger website directed him there?
I read this in the comments to his post:
Wim1441 asks the author:
From which website did you download ledger live? Maybe they had a scam website shown on the packaging or in the manual.
Programmierus answers him:
Not possible. Ledger Live from App Store on Mac.