I sent a offer to a guest which they have excepted to only see that the dates have been changed.

[Elzain0]

I sent a guest an offer that he excepted to only notice that after Airbnb did their update a few of my blocked off dates as well as the dates on my guest reservation has been changed. No the booking states that his booking is more then a month and paying less then a 10th of the price we argeed on. i have contacted him and did the whole date change thing asked him to confirm to open the dates up again for me but he has not replied. How do i fix this? its more then 3 weeks of my Peak season that has been blocked off that i cant book now?...........