@May108
for every change in your booking you have to send an alteration request to your host.
Your host can accept it or decline it.
You can make as many alteration requests as you want , it is up to your host if he will accept any of them.
Your 48 no-penalty cancellation expires after 48 h of your initial booking. You can cancel later but service fee will not be refunded.
If you booked under flexible cancelation policy then you can cancel up to 24 h before check in date and will be refunded for your stay .