A&E in my experience, is not on a delay. If it is going to be available, it will be open at the 60 day mark. The problem is, it has a lot of limitations. It is only offered on weekday mornings. Because demand is so high and supply is so short, it gets booked really fast. So it was unavailable the first 5 days of my trip. I was able to book it on the last 2 days. And I logged on at midnight on Day 60. The problem is, on Day 60, everyone else staying on property has already booked their 60+ meaning that on day 60 it may be booked the first few days of your trip.
Good luck! Keep trying. Maybe a cancellation will open up.