Your subscription includes support for CB Paid Subscriptions only and have moved your topic to the community forums.
Regarding your issue the header is configured in CB > Configuration > Registration. You can also configure foot text and header image here as well. In addition to this it looks like your login module display on the left is due to CBs registration being configured to display the login form which is also configured in that same tab.
As for the Sign Up title that can only be changed with a language string. See the below on how to use language overrides to change it.
www.joomlapolis.com/blog/kyle/18701-language-overrides-have-arrived