This reply has been accepted as the best answer.
A few things to start:
Your header is using both the align area: alignfull, and a class wvrx-fullwidth
These conflict with eachother, so remove the class and just keep the align option
Your Header is hidden so nothing in it (including the menu) show up. Unhide the header in the header hide area option.
Your menu background is set to white, and so are the menu items, so even when the menu will show up, you wont see the text