Looks to me like a quote only. Cannot see any booking reference. If you have received no confirmation within your airbnb account then it is up to the guest to contact Airbnb to sort it out. Can they cancel and retry? You of course can forward the query via your help. Not something the community can help with.
@Anvaya-Cove0 Only Airbnb can confirm payment. Don't accept any message from a guest that they have paid. @Marcus0 is correct. What he sent you was just the payment details, not the payment itself. If there is a problem with payment, the guest should contact Airbnb directly.
There's no booking number and I don't see any proof of payment. The guest and Airbnb need to work out the payment. It's not up to you to get involved. Look to future guests, and don't spend a lot of time on people who can't pay.