Domain Registration

Please be sure to read through all of this, not just a portion. I was finally able to build our new website using Website Builder. I also managed to get it published. However, it has the homesteadcloud.com at the end. This is not wanted at all. I did get the name changed, but it's still pointing to homesteadcloud when I click publish. How do I change that so that it is publishing with our actual name, not homesteadcloud?        We also currently have 2 domains. I have no idea why that was ever setup, but it was. That is not needed either. I want to delete the one, but I need to be sure the site I created shows under the domains, but the one with our correct name now shows "Unable to complete your registration" and We are currently unable to register your domain. Please try again at a later time. I changed our name to AmericanLegionPost148Riverview.Org. That is the site I just finished creating and published. What do I need to do to be sure our correct domain is registered, then only our name with .org is published? I do not want it pointing to homesteadcloud.com. That is nothing to do with our name. To say I'm frustrated is putting it very mildly.