Money matters are between the guests and Airbnb, @Christine2923 . Normally when it is a payment thing, I would say they should ask Airbnb, but this particular request won't do them any good. Airbnb doesn't work that way.
They might, then, want to go outside the system and have you accept a cheque directly two days after they arrive. It's not a good idea for you to agree to this. They may stay the month, or longer, without paying at all, excuse after excuse, and then you have a tangled and expensive mess on your hands.
If they are serious about staying and paying, and they want to book now, they will find something or someone other than you to carry them.