I use the beta of macOS Mojave and I want to download High Sierra for another install.
I don't find it in the new App Store, maybe because the update of the OS is now in the System Preferences.
I try the link from the online version: https://itunes.apple.com/us/app/macos-high-sierra/id1246284741?mt=12 but the Download button is disabled.
Any idea to download it?