My two cents: booked a stay at CP Melbourne, 75K total using Buy 3, Stay 4 CC points offer. The email confirmation took an unusually long period of time to arrive, almost 6 hours after booking. But it did arrive, and I can go into my account and call up the reservation with no problems online, but in the app I too get the error message that others have seen. However, I will add that I get that message in the app for EVERY booking I've made before yesterday's fire sale.

I'm holding on to the original booking (91K) for a while just in case there is a mass reversal of the bookings. Still kicking myself for not jumping on this a bit faster, as I was then trying to book Kimpton Muse NYC when the offer was pulled.