In order to use your owned domain and connect it to your website builder, you should follow the steps:
- Connect to your domain registrar panel;
- Choose the domain you want to connect to Website Builder;
- Create new or edit existing A record and point it to the server:
That is it, you might need to wait some time (usually up to 1 hour) for DNS propagation, but after this time, your domain should be connected to the Website Builder correctly.
Note. If you have a registered domain at Hostens, you may check this article Working with DNS Manager.