Programmatically detect if iOS app is running on a Mac, is that possible?

Since macOS 12, AHRegisterHelpBook() and friends as declared in AppleHelp.h doesn't work anymore. This is an old API but have worked fine up until now. Is this a bug? What's the modern alternative for Help in a macOS app?

I have ticked the "Auto-Renew Membership" check box but every time I log in to iTunes Connect, I'm greated with:Renew Your Apple Developer Program MembershipIf you do not renew your membership before Sep 28, 2016, your apps will no longer be available on the App Store.Previously I paid every year but this time I selected "Auto-Renew Membership".Should I be worried about the message?Thanks