Hi @Maria973,
As @Marit-Anne0 said, there are penalties for cancelling a booking as a host- you can see the full penalties here. The only way you can avoid these penalties is if you had to cancel due to extenuating circumstances.
Just to let you know, I have moved your post here to a new thread so that it doesn't get lost in another discussion and it is easier to find. I have also given it a title, please let me know if you want to change it!
In case you're not sure how to start a new thread - this CC Tutorial gives a step by step guide to starting a conversation in the Community Centre.
Kirstie