Hi @Julie5523, Have you managed to get in touch with Airbnb Customer Support to learn more about Security Deposits?
I was having a good look at our Help Centre to find relevant information regarding this and found an article that states:
Hosts aren’t allowed to charge guests a security deposit through our Resolution Centre or outside the Airbnb platform. Instead, we inform guests at the time of booking that their payment method may be charged if they cause damage during a stay.
There is one exception: Hosts who manage their listings with API-connected software can set a security deposit using our offline fees feature. If a Host has done this, the deposit requirements will be clearly communicated during the booking process.
If you would like to get more information, I am linking the articles here : Security Deposits and API-connected software. You will be re-directed to many relevant links once you start going through the articles.
I hope it helps give you more idea!