If your website hasn't been published yet, click on the green Publish button in the top right corner.
Then you can enter your own desired domain name and check its availability. If your desired domain is available, select it for registration and purchase a paid subscription of your choice afterward.
You can also use a domain that you already own by transferring or linking it to Webador.
✔ Tip: Check out our blog for finding the right domain name: 7 Tips for finding the right domain name