Vantage Header problem

I have installed Vantage and also have the siteorigin builder and widgets installed. There is something wrong with the header though. There is no white space at the top, the vantage logo is not displayed by default and there is no text displayed at all in the header. It is easier to show you than describe but I cannot see a way of attaching a screenshot here.

All header text is enabled and set so I don’t understand what is happening. Can someone help please?