Yes. You can use your own domain name by domain mapping your domain to our DNS A record and CNAME to cloudpagebuilder.com.
Detailed instruction in your Admin Dashboard
Go to Admin dashboard, then go to Settings then go to Reading Settings. From there you can change the Your homepage displays to your chosen Homepage Static Page were you created from a new page
Login into your admin dashboard, then go to Builder then Choose Theme Layout then Add New.
Fill the Title, Themer Layout as a Type, and Header as a Layout then Add.
Add New Themer Layout as a Header
Then you can choose Entire Site as Location if you the header appear in all pages/posts, or...