Apple Books app: "This app is only available on iOS. To get this app, search for it on the App Store on your iOS device."
When I try to update Apple Books iOS app through iTunes 12.6.5.3 it say's "This app is only available on iOS. To get this app, search for it on the App Store on your iOS device."
When I search the app store for the Apple Books app, no updates are shown as available. Search for Apple Books results in a 'Open' button rather than an 'Update' button.
All other apps seem to be downloading just fine.
Any ideas?
iMac 27", macOS 10.13