9 Pro/Windows -> 9 Pro/Windows + macOS

I do have Pro with VIP support, upgrades,etc which I use on my Win machine.

I’m allowed to use same license on my mac(with mac version of eM client - it looks like mac version is something I missed) or new license must be purchased? Is discount available?

Is there way to copy all eM client settings from Win to macOS?

Is there way to keep them in sync?