Installing www.remarpro.com keeps changing back.

So I finished the installation process. It’s all done, but then I get to the login page. You know, the localhost:8888 login page. If I login, it immediately goes to ANOTHER login page, but that is the normal wordpress.com login page. When I log in there as well, nothing has changed; there is no new www.remarpro.com… I feel like I’m very stupid and do everything wrong. Help me?