Airbnb’s “Smart Pricing” Tool is not very smart, at least not from a host’s standpoint. That’s probably why your prices are all different.
I guess you will have to write down all the information, then contact the guests individually and explain the situation.
When all the reservations are canceled the guests will have to rebook. You should turn off Smart Pricing and manually put the appropriate prices on the dates that they will be reserving.
To make this even more complicated other people might try to grab those dates, so make sure Instant Book is OFF and check names before approval.
You can also expect some guests to ignore you and when they wake up weeks or months later they will be crying tears as big as horse turds because you ruined their vacation.
You can block their dates and wait or you can just ignore them.
The one thing you don’t have to worry about is the 24-hour answer window. You can set up an automatic response that promises a full response as soon as you possibly can get to it.