Podbean subdomain is a part of your podcast site URL, for example, https://yoursubdomain.podbean.com. It is also used in your podcast feed.
The subdomain is a piece of required information when you create a podcast account on Podbean. You can change your subdomain later, but it will affect your podcast site URL and podcast feed, so consider setting up a subdomain that you will likely want to keep.
To change your subdomain, please click here to read more.