Wow, with that little of information, I wonder why Disney even bothered to respond?
I really wish I knew what was going on. If I can't add another person, I need to cancel our existing 2020 reservation, and I'd like to book an early breakfast at Magic Kingdom in lieu of EEM, but I can't book it as long as I have the existing reservation, and I don't want to cancel it yet! If they are pulling EMM days, then they might end of cancelling my reservation themselves, and if I wait much longer, all the early breakfast times will be gone. Argh.