The problem, as I've written in the first post, ist my template.
When I create an article I can insert the menu hamnurger image into header, but when another kind of page, like all CB pages, is displayed it take the header from template that have a bug and not permit to show the hamburger image.
This is with article header:
www.trainingtobefit.com
this is an other kind of page (in this case the cb generated page for forgetting user or password, but is the same for profile page)
www.trainingtobefit.com/cb-forgot-login.html